Wright State University Lake Campus/2017-1/Phy2400/printPDF
Contents
Online study guide[edit]
T1[edit]
2/4 from 1417603 to a02_1Dkinem_definitions
2/4 from 1410638 to a02_1Dkinem_equations
2/4 from 1411599 to a03_2Dkinem_2dmotion
2/4 from 1411598 to a03_2Dkinem_smithtrain
3/12 from 1395847 to b_motionSimpleArithmetic
4/19 from 137851 to b_velocityAcceleration
T2[edit]
2/4 from 1411601 to a04DynForce Newton_forces
2/4 from 1411605 to a04DynForce Newton_sled
3/5 from 1411613 to a04DynForce Newton_tensions
3/5 from 1417994 to a05frictDragElast_3rdLaw
3/5 from 1418007 to a06uniformCircMotGravitation_friction
2/14 from 1411691 to a06uniformCircMotGravitation_proof
T3[edit]
2/3 from 1380215 to a07energy_cart1
2/3 from 1380821 to a07energy_cart2
2/3 from 1418173 to a08linearMomentumCollisions
3/5 from 1418177 to a09staticsTorques_torque
2/4 from 1412312 to a10rotationalMotionAngMom_dynamics
2/4 from 1412355 to a11fluidStatics_buoyantForce
2/4 from 1381800 to c07energy_lineIntegral
T4[edit]
2/4 from 1412378 to a12fluidDynamics_pipeDiameter
2/3 from 1412379 to a13TemperatureKineticTheoGasLaw_rmsTransfer
2/4 from 1412391 to a14HeatTransfer_specifHeatConduct
2/4 from 1412397 to a15Thermodynamics_heatEngine
2/4 from 1412409 to a16OscillationsWaves_amplitudes
1/3 from 1418299 to a17PhysHearing_echoString
1/16 from 1409885 to b_waves_PC
3/6 from 1412603 to c16OscillationsWaves_calculus
FE[edit]
1/4 from 1410638 to a02_1Dkinem_equations
1/4 from 1411599 to a03_2Dkinem_2dmotion
1/4 from 1411601 to a04DynForce Newton_forces
1/4 from 1411605 to a04DynForce Newton_sled
1/5 from 1418007 to a06uniformCircMotGravitation_friction
1/3 from 1380821 to a07energy_cart2
1/3 from 1418173 to a08linearMomentumCollisions
1/4 from 1412312 to a10rotationalMotionAngMom_dynamics
1/4 from 1412355 to a11fluidStatics_buoyantForce
1/4 from 1412378 to a12fluidDynamics_pipeDiameter
1/4 from 1412391 to a14HeatTransfer_specifHeatConduct
1/4 from 1412397 to a15Thermodynamics_heatEngine
1/19 from 137851 to b_velocityAcceleration
1/4 from 1381800 to c07energy_lineIntegral
1/6 from 1412603 to c16OscillationsWaves_calculus
Pdf[edit]
- Pdf (instructors should make a trusted offline versionof this pdf available to the students)
S_G: Studyguide[edit]
1) A car traveling at 75.4 miles/hour stops in 1.9 seconds. What is the average acceleration?
- a) 1.77 x 10^{1} m/s^{2}
- b) 3.15 x 10^{1} m/s^{2}
- c) 5.61 x 10^{1} m/s^{2}
- d) 9.98 x 10^{1} m/s^{2}
- e) 1.77 x 10^{2} m/s^{2}
2) A car completes a complete circle of radius 1.2 miles at a speed of 42 miles per hour. How many minutes does it take?
- a) 3.41 x 10^{0} minutes
- b) 4.54 x 10^{0} minutes
- c) 6.06 x 10^{0} minutes
- d) 8.08 x 10^{0} minutes
- e) 1.08 x 10^{1} minutes
3) A car traveling at 38.9 mph increases its speed to 43.7 mph in 3 seconds. What is the average acceleration?
- a) 2.26 x 10^{-1} m/s^{2}
- b) 4.02 x 10^{-1} m/s^{2}
- c) 7.15 x 10^{-1} m/s^{2}
- d) 1.27 x 10^{0} m/s^{2}
- e) 2.26 x 10^{0} m/s^{2}
4) Mr. Smith is backing his car at a speed of 2.33 mph when he hits a cornfield (seed corn). In the course of 1.22 seconds he stops, puts his car in forward drive, and exits the field at a speed of 6.68 mph. What was the magnitude ( absolute value) of his acceleration?
- a) 2.94 x 10^{0} miles per hour per second
- b) 3.7 x 10^{0} miles per hour per second
- c) 4.66 x 10^{0} miles per hour per second
- d) 5.87 x 10^{0} miles per hour per second
- e) 7.39 x 10^{0} miles per hour per second
5) A car is accelerating uniformly at an acceleration of 3.8m/s/s. At x = 4.5m, the speed is 3.6m/s. How fast is it moving at x = 11.5 m?
- a) 8.13 m/s.
- b) 9.76 m/s.
- c) 11.71 m/s.
- d) 14.06 m/s.
- e) 16.87 m/s.
6) What is the acceleration if a car travelling at 8.45 m/s makes a skid mark that is 8.5 m long before coming to rest? (Assume uniform acceleration.)
- a) 2.43m/s^{2}.
- b) 2.92m/s^{2}.
- c) 3.5m/s^{2}.
- d) 4.2m/s^{2}.
- e) 5.04m/s^{2}.
7) A train accelerates uniformly from 17.75 m/s to 31.625 m/s, while travelling a distance of 372 m. What is the 'average' acceleration?
- a) 0.77m/s/s.
- b) 0.92m/s/s.
- c) 1.1m/s/s.
- d) 1.33m/s/s.
- e) 1.59m/s/s.
8) A particle accelerates uniformly at 12.5 m/s/s. How long does it take for the velocity to increase from 1173 m/s to 1878 m/s?
- a) 39.17 s
- b) 47 s
- c) 56.4 s
- d) 67.68 s
- e) 81.22 s
9) A ball is kicked horizontally from a height of 2 m, at a speed of 7.7m/s. How far does it travel before landing?
- a) 2.85 m.
- b) 3.42 m.
- c) 4.1 m.
- d) 4.92 m.
- e) 5.9 m.
10) A particle is initially at the origin and moving in the x direction at a speed of 4.3 m/s. It has an constant acceleration of 1.8 m/s^{2} in the y direction, as well as an acceleration of 0.3 in the x direction. What angle does the velocity make with the x axis at time t = 2.5 s?
- a) 36.26 degrees.
- b) 41.7 degrees.
- c) 47.96 degrees.
- d) 55.15 degrees.
- e) 63.43 degrees.
11) At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 7.34 m/s at an angle of θ above the x-axis. Particle B is initially situated at x= 2.22 m, and moves at a constant speed of 2.91 m/s in the +y direction. At what time do they meet?
- a) 0.23 s.
- b) 0.27 s.
- c) 0.33 s.
- d) 0.4 s.
- e) 0.47 s.
12) At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 8.02 m/s at an angle of θ above the x-axis. Particle B is initially situated at x= 2.27 m, and moves at a constant speed of 2.5 m/s in the +y direction. What is the value of θ (in radians)?
- a) 0.18 radians.
- b) 0.21 radians.
- c) 0.24 radians.
- d) 0.28 radians.
- e) 0.32 radians.
13) The Smith family is having fun on a high speed train travelling at 42.3 m/s. Mr. Smith is at the back of the train and fires a pellet gun with a muzzle speed of 25.2 m/s at Mrs. Smith who is at the front of the train. What is the speed of the bullet with respect to Earth?
- a) 30 m/s.
- b) 45 m/s.
- c) 67.5 m/s.
- d) 101.3 m/s.
- e) 151.9 m/s.
14) The Smith family is having fun on a high speed train travelling at 42.3 m/s. Mrs. Smith, who is at the front of the train, fires straight towards the back with a bullet that is going forward with respect to Earth at a speed of 26.3 m/s. What was the muzzle speed of her bullet?
- a) 7.1 m/s.
- b) 10.7 m/s.
- c) 16 m/s.
- d) 24 m/s.
- e) 36 m/s.
15) The Smith family is having fun on a high speed train travelling at 47.6 m/s. The daugher fires at Mr. Smith with a pellet gun whose muzzle speed is 25.5 m/s. She was situated across the isle, perpendicular to the length of the train. What is the speed of her bullet with respect to Earth?
- a) 10.7 m/s.
- b) 16 m/s.
- c) 24 m/s.
- d) 36 m/s.
- e) 54 m/s.
16) The Smith family got in trouble for having fun on a high speed train travelling at 47.1 m/s. Mr. Smith is charged with having fired a pellet gun at his daughter (directly across the isle) with a bullet that had a speed of 95.6 m/s with respect to Earth. How fast was the bullet going relative to the daughter (i.e. train)?
- a) 69.3 m/s.
- b) 83.2 m/s.
- c) 99.8 m/s.
- d) 119.8 m/s.
- e) 143.8 m/s.
17) A mass with weight (mg) of 32 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 40 degrees. What is the tension in the string?
- a) 11.2 N.
- b) 12.9 N.
- c) 14.8 N.
- d) 17 N.
- e) 19.6 N.
18) A mass with weight (mg) equal to 21 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 66 degrees with respect to the horizontal. What is the tension in each string?
- a) 6.6 N.
- b) 7.6 N.
- c) 8.7 N.
- d) 10 N.
- e) 11.5 N.
19) A 3.1 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.43 . In addition to the surface friction, there is also an air drag equal to 12 N. What is the magnitude (absolute value) of the acceleration?
- a) 4.6 m/s^{2}.
- b) 5.3 m/s^{2}.
- c) 6.1 m/s^{2}.
- d) 7 m/s^{2}.
- e) 8.1 m/s^{2}.
20) A mass with weight (mg) 10.8 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 4.53 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
- a) 0.38
- b) 0.46
- c) 0.55
- d) 0.66
- e) 0.79
21) A sled of mass 5.1 kg is at rest on a rough surface. A string pulls with a tension of 41.2N at an angle of 42 degress above the horizontal. What is the magnitude of the friction?
- a) 23.15 N.
- b) 26.62 N.
- c) 30.62 N.
- d) 35.21 N.
- e) 40.49 N.
22) A sled of mass 5.8 kg is at rest on a rough surface. A string pulls with a tension of 41.9N at an angle of 42 degress above the horizontal. What is the normal force?
- a) 18.94 N.
- b) 21.78 N.
- c) 25.05 N.
- d) 28.8 N.
- e) 33.12 N.
23) A sled of mass 5.2 kg is at rest on a perfectly smooth surface. A string pulls with a tension of 41.3N at an angle of 55 degress above the horizontal. How long will it take to reach a speed of 9.8 m/s?
- a) 1.87 s
- b) 2.15 s
- c) 2.47 s
- d) 2.85 s
- e) 3.27 s
24) A sled of mass 2.5 kg is on perfectly smooth surface. A string pulls with a tension of 18.1N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 2 m/s^{2}?
- a) 74 degrees
- b) 85.1 degrees
- c) 97.8 degrees
- d) 112.5 degrees
- e) 129.4 degrees
- a) 26.66 N.
- b) 30.66 N.
- c) 35.25 N.
- d) 40.54 N.
- e) 46.62 N.
26) In the figure "3 tensions" shown above θ_{1} is 18 degrees, and θ_{3} is 35 degrees. The tension T_{3} is 48 N. What is the weight?
- a) 40.3 N.
- b) 46.4 N.
- c) 53.3 N.
- d) 61.3 N.
- e) 70.5 N.
- a) 60.54 N.
- b) 69.62 N.
- c) 80.06 N.
- d) 92.07 N.
- e) 105.88 N.
- a) 21.2 N.
- b) 25.4 N.
- c) 30.5 N.
- d) 36.6 N.
- e) 43.9 N.
- a) 34.19 N.
- b) 39.32 N.
- c) 45.21 N.
- d) 52 N.
- e) 59.79 N.
- a) 79 N
- b) 90.8 N
- c) 104.4 N
- d) 120.1 N
- e) 138.1 N
- a) 12.6 m/s^{2}
- b) 14.4 m/s^{2}
- c) 16.6 m/s^{2}
- d) 19.1 m/s^{2}
- e) 22 m/s^{2}
32) Nine barefoot baseball players, with a total mass of 640 kg plays tug of war against five basketball players wearing shoes that provide a static coefficient of friction of 0.61 . The net mass of the (shoed) basketball team is 385 kg. What is the maximum coefficient of the barefoot boys if they lose?
- a) 0.303
- b) 0.334
- c) 0.367
- d) 0.404
- e) 0.444
33) Without their shoes, members of a 9 person baseball team have a coefficient of static friction of only 0.33 . But the team wins a game of tug of war due to their superior mass of 663 kg. They are playing against a 5 person basketball team with a net mass of 422 kg. What is the maximum coefficient of static friction of the basketball team?
- a) 0.39
- b) 0.428
- c) 0.471
- d) 0.518
- e) 0.57
- a) 48.6 N
- b) 55.9 N
- c) 64.2 N
- d) 73.9 N
- e) 85 N
35) A merry-go-round has an angular frequency, , equal to 0.15 rad/sec. How many minutes does it take to complete 9.5 revolutions?
- a) 5.77 minutes.
- b) 6.63 minutes.
- c) 7.63 minutes.
- d) 8.77 minutes.
- e) 10.09 minutes.
36) A merry-go round has a period of 0.26 minutes. What is the centripetal force on a 53.3 kg person who is standing 1.35 meters from the center?
- a) 7.7 newtons.
- b) 8.8 newtons.
- c) 10.2 newtons.
- d) 11.7 newtons.
- e) 13.4 newtons.
37) A merry-go round has a period of 0.32 minutes. What is the minimum coefficient of static friction that would allow a 88.1 kg person to stand1.73 meters from the center, without grabbing something?
- a) 0.019
- b) 0.022
- c) 0.025
- d) 0.029
- e) 0.033
38) What is the gravitational acceleration on a plant that is 2.21 times more massive than Earth, and a radius that is 1.74 times greater than Earths?
- a) 4.1 m/s^{2}
- b) 4.7 m/s^{2}
- c) 5.4 m/s^{2}
- d) 6.2 m/s^{2}
- e) 7.2 m/s^{2}
39) What is the gravitational acceleration on a plant that is 1.47 times more dense than Earth, and a radius that is 1.42 times greater than Earth's?
- a) 20.5 m/s^{2}
- b) 23.5 m/s^{2}
- c) 27.1 m/s^{2}
- d) 31.1 m/s^{2}
- e) 35.8 m/s^{2}
- a) 1.24 m
- b) 1.30 m
- c) 1.36 m
- d) 1.43 m
- e) 1.50 m
- a) 7.12E+01 m
- b) 7.47E+01 m
- c) 7.85E+01 m
- d) 8.24E+01 m
- e) 8.65E+01 m
- a) 2.88 m
- b) 3.02 m
- c) 3.17 m
- d) 3.33 m
- e) 3.50 m
- a) 0.559 kg
- b) 0.587 kg
- c) 0.617 kg
- d) 0.648 kg
- e) 0.680 kg
- a) 1.72 m
- b) 1.84 m
- c) 1.97 m
- d) 2.11 m
- e) 2.26 m
59) You are riding a bicycle on a flat road. Assume no friction or air drag, and that you are coasting. Your speed is 4.9m/s, when you encounter a hill of height 1.14m. What is your speed at the top of the hill?
- a) 1.218 m/s
- b) 1.291 m/s
- c) 1.368 m/s
- d) 1.450 m/s
- e) 1.537 m/s
60) On object of mass 2.3 kg that is moving at a velocity of 22m/s collides with a stationary object of mass 19.8 kg. What is the final velocity if they stick? (Assume no external friction.)
- a) 1.32m/s.
- b) 1.59m/s.
- c) 1.91m/s.
- d) 2.29m/s.
- e) 2.75m/s.
61) A car of mass 856 kg is driving on an icy road at a speed of 19 m/s, when it collides with a stationary truck. After the collision they stick and move at a speed of 4.7 m/s. What was the mass of the truck?
- a) 1507 kg
- b) 1809 kg
- c) 2170 kg
- d) 2604 kg
- e) 3125 kg
- a) 39 m/s.
- b) 42 m/s.
- c) 44 m/s.
- d) 48 m/s.
- e) 51 m/s.
- a) 1.07E+02 N
- b) 1.35E+02 N
- c) 1.70E+02 N
- d) 2.14E+02 N
- e) 2.70E+02 N
- a) 7.09E+00 N
- b) 8.58E+00 N
- c) 1.04E+01 N
- d) 1.26E+01 N
- e) 1.53E+01 N
- a) 7.50E+01 N
- b) 9.09E+01 N
- c) 1.10E+02 N
- d) 1.33E+02 N
- e) 1.62E+02 N
- a) 8.25E-01 N
- b) 1.00E+00 N
- c) 1.21E+00 N
- d) 1.47E+00 N
- e) 1.78E+00 N
- a) 1.46E+01 N
- b) 1.77E+01 N
- c) 2.14E+01 N
- d) 2.60E+01 N
- e) 3.15E+01 N
68) A car with a tire radius of 0.28 m accelerates from 0 to 22 m/s in 10 seconds. What is the angular acceleration of the wheel?
- a) 5.35 x 10^{0} m
- b) 6.49 x 10^{0} m
- c) 7.86 x 10^{0} m
- d) 9.52 x 10^{0} m
- e) 1.15 x 10^{1} m
69) A lead filled bicycle wheel of radius 0.35 m and mass 2.7 kg is rotating at a frequency of 1.5 revolutions per second. What is the moment of inertia?
- a) 2.25 x 10^{-1} kg m^{2}/s^{2}
- b) 2.73 x 10^{-1} kg m^{2}/s^{2}
- c) 3.31 x 10^{-1} kg m^{2}/s^{2}
- d) 4.01 x 10^{-1} kg m^{2}/s^{2}
- e) 4.85 x 10^{-1} kg m^{2}/s^{2}
70) A lead filled bicycle wheel of radius 0.4 m and mass 2.7 kg is rotating at a frequency of 1.6 revolutions per second. What is the total kinetic energy if the wheel is rolling about a stationary axis?
- a) 1.23 x 10^{1} J
- b) 1.49 x 10^{1} J
- c) 1.8 x 10^{1} J
- d) 2.18 x 10^{1} J
- e) 2.64 x 10^{1} J
- a) 2.83 x 10^{1} s^{-2}
- b) 3.43 x 10^{1} s^{-2}
- c) 4.16 x 10^{1} s^{-2}
- d) 5.04 x 10^{1} s^{-2}
- e) 6.11 x 10^{1} s^{-2}
72) A cylinder with a radius of 0.38 m and a length of 3.6 m is held so that the top circular face is 4.2 m below the water. The mass of the block is 829.0 kg. The mass density of water is 1000kg/m^3. What is the pressure at the top face of the cylinder?
- 3.40E4 Pa
- 4.12E4 Pa
- 4.99E4 Pa
- 6.04E4 Pa
- 7.32E4 Pa
73) A cylinder with a radius of 0.25 m and a length of 3.5 m is held so that the top circular face is 3.3 m below the water. The mass of the block is 922.0 kg. The mass density of water is 1000kg/m^3. What is the buoyant force?
- 5.56E3 N
- 6.73E3 N
- 8.16E3 N
- 9.89E3 N
- 1.20E4 N
74) A cylinder with a radius of 0.31 m and a length of 3.5 m is held so that the top circular face is 4.8 m below the water. The mass of the block is 933.0 kg. The mass density of water is 1000kg/m^3. What is the force exerted by the water at the top surface?
- 7.12E3 N
- 8.96E3 N
- 1.13E4 N
- 1.42E4 N
- 1.79E4 N
75) A cylinder with a radius of 0.29 m and a length of 2.3 m is held so that the top circular face is 4.7 m below the water. The mass of the block is 968.0 kg. The mass density of water is 1000kg/m^3. What is the force exerted by the fluid on the bottom of the cylinder?
- 1.44E4 Pa
- 1.81E4 Pa
- 2.28E4 Pa
- 2.87E4 Pa
- 3.62E4 Pa
76) A 6.3 cm diameter pipe can fill a 1.4 m^3 volume in 8.0 minutes. Before exiting the pipe, the diameter is reduced to 4.8 cm (with no loss of flow rate). What is the speed in the first (wider) pipe?
- a) 7.72E-1 m/s
- b) 9.36E-1 m/s
- c) 1.13E0 m/s
- d) 1.37E0 m/s
- e) 1.66E0 m/s
77) A 9.2 cm diameter pipe can fill a 1.6 m^3 volume in 8.0 minutes. Before exiting the pipe, the diameter is reduced to 4.0 cm (with no loss of flow rate). What is the pressure difference (in Pascals) between the two regions of the pipe?
- a) 1.91E3
- b) 2.31E3
- c) 2.80E3
- d) 3.39E3
- e) 4.11E3
78) A 9.7 cm diameter pipe can fill a 1.2 m^3 volume in 4.0 minutes. Before exiting the pipe, the diameter is reduced to 4.3 cm (with no loss of flow rate). If two fluid elements at the center of the pipe are separated by 22.0 mm when they are both in the wide pipe, and we neglect turbulence, what is the separation when both are in the narrow pipe?
- a) 6.30E1 mm
- b) 7.63E1 mm
- c) 9.24E1 mm
- d) 1.12E2 mm
- e) 1.36E2 mm
79) A large cylinder is filled with water so that the bottom is 8.8 m below the waterline. At the bottom is a small hole with a diameter of 6.3E-4 m. How fast is the water flowing at the hole? (Neglect viscous effects, turbulence, and also assume that the hole is so small that no significant motion occurs at the top of the cylinder.)
- a) 1.08E1 m/s
- b) 1.31E1 m/s
- c) 1.59E1 m/s
- d) 1.93E1 m/s
- e) 2.34E1 m/s
80) What is the root-mean-square of -28, -38, and -13?
- a) 2.519 x 10^{1}
- b) 2.827 x 10^{1}
- c) 3.172 x 10^{1}
- d) 3.559 x 10^{1}
- e) 3.993 x 10^{1}
81) What is the rms speed of a molecule with an atomic mass of 21 if the temperature is 58 degrees Fahrenheit?
- a) 4.82 x 10^{2} m/s
- b) 5.84 x 10^{2} m/s
- c) 7.08 x 10^{2} m/s
- d) 8.58 x 10^{2} m/s
- e) 1.04 x 10^{3} m/s
82) If a molecule with atomic mass equal to 3 amu has a speed of 405 m/s, what is the speed at an atom in the same atmosphere of a molecule with an atomic mass of 24 ?
- a) 8.05 x 10^{1} m/s
- b) 9.76 x 10^{1} m/s
- c) 1.18 x 10^{2} m/s
- d) 1.43 x 10^{2} m/s
- e) 1.73 x 10^{2} m/s
83) The specific heat of water and aluminum are 4186 and 900, respectively, where the units are J/kg/Celsius. An aluminum container of mass 0.68 kg is filled with 0.17 kg of water. How much heat does it take to raise both from 47.8 C to 83.2 C?
- a) 3.37 x 10^{4} J
- b) 3.98 x 10^{4} J
- c) 4.69 x 10^{4} J
- d) 5.52 x 10^{4} J
- e) 6.51 x 10^{4} J
84) The specific heat of water and aluminum are 4186 and 900, respectively, where the units are J/kg/Celsius. An aluminum container of mass 0.99 kg is filled with 0.26 kg of water. What fraction of the heat went into the aluminum?
- a) 2.7 x 10^{-1}
- b) 3.2 x 10^{-1}
- c) 3.8 x 10^{-1}
- d) 4.5 x 10^{-1}
- e) 5.3 x 10^{-1}
85) The specific heat of water and aluminum are 4186 and 900, respectively, where the units are J/kg/Celsius. An aluminum container of mass 0.99 kg is filled with 0.26 kg of water. You are consulting for the flat earth society, a group of people who believe that the acceleration of gravity equals 9.8 m/s/s at all altitudes. Based on this assumption, from what height must the water and container be dropped to achieve the same change in temperature? (For comparison, Earth's radius is 6,371 kilometers)
- a) 3.16 x 10^{0} km
- b) 3.83 x 10^{0} km
- c) 4.64 x 10^{0} km
- d) 5.62 x 10^{0} km
- e) 6.81 x 10^{0} km
86) A window is square, with a length of each side equal to 0.73 meters. The glass has a thickness of 16 mm. To decrease the heat loss, you reduce the size of the window by decreasing the length of each side by a factor of 1.27. You also increase the thickness of the glass by a factor of 2. If the inside and outside temperatures are unchanged, by what factor have you decreased the heat flow?. By what factor have you decreased the heat flow (assuming the same inside and outside temperatures).
- a) 1.5 x 10^{0} unit
- b) 1.81 x 10^{0} unit
- c) 2.2 x 10^{0} unit
- d) 2.66 x 10^{0} unit
- e) 3.23 x 10^{0} unit
- a) 3.78 x 10^{2} J
- b) 1.2 x 10^{3} J
- c) 3.78 x 10^{3} J
- d) 1.2 x 10^{4} J
- e) 3.78 x 10^{4} J
- a) 1.67 x 10^{3} J
- b) 5.27 x 10^{3} J
- c) 1.67 x 10^{4} J
- d) 5.27 x 10^{4} J
- e) 1.67 x 10^{5} J
- a) 1.34 x 10^{2} J
- b) 4.23 x 10^{2} J
- c) 1.34 x 10^{3} J
- d) 4.23 x 10^{3} J
- e) 1.34 x 10^{4} J
- a) 1.03 x 10^{1} K
- b) 3.25 x 10^{1} K
- c) 1.03 x 10^{2} K
- d) 3.25 x 10^{2} K
- e) 1.03 x 10^{3} K
91) A 0.062 kg mass is on a spring that causes the frequency of oscillation to be 65 cycles per second. The maximum velocity is 70.2 m/s. What is the maximum force on the mass?
- a) 1.8 x 10^{3} N
- b) 3.8 x 10^{3} N
- c) 8.3 x 10^{3} N
- d) 1.8 x 10^{4} N
- e) 3.8 x 10^{4} N
92) A spring with spring constant 9.6 kN/m is attached to a 9.1 gram mass. The maximum acelleration is 1.6 m/s^{2}. What is the maximum displacement?
- a) 4.8 x 10^{-7} m
- b) 1.52 x 10^{-6} m
- c) 4.8 x 10^{-6} m
- d) 1.52 x 10^{-5} m
- e) 4.8 x 10^{-5} m
93) A spring of spring constant 4.9 kN/m causes a mass to move with a period of 8.8 ms. The maximum displacement is 2.1 mm. What is the maximum kinetic energy?
- a) 3.42 x 10^{-3} J
- b) 1.08 x 10^{-2} J
- c) 3.42 x 10^{-2} J
- d) 1.08 x 10^{-1} J
- e) 3.42 x 10^{-1} J
94) A spring with spring constant 1.1 kN/m undergoes simple harmonic motion with a frequency of 8.4 kHz. The maximum force is 3.8 N. What is the total energy?
- a) 6.56 x 10^{-4} J
- b) 2.08 x 10^{-3} J
- c) 6.56 x 10^{-3} J
- d) 2.08 x 10^{-2} J
- e) 6.56 x 10^{-2} J
95) The temperature is -2.7 degrees Celsius, and you are standing 0.58 km from a cliff. What is the echo time?
- a) 2.797 x 10^{0} seconds
- b) 3.02 x 10^{0} seconds
- c) 3.261 x 10^{0} seconds
- d) 3.521 x 10^{0} seconds
- e) 3.802 x 10^{0} seconds
96) While standing 0.58 km from a cliff, you measure the echo time to be 3.38 seconds. What is the temperature?
- a) 1.53 x 10^{1}Celsius
- b) 1.76 x 10^{1}Celsius
- c) 2.03 x 10^{1}Celsius
- d) 2.35 x 10^{1}Celsius
- e) 2.71 x 10^{1}Celsius
97) What is the speed of a transverse wave on a string if the string is 0.45 m long, clamped at both ends, and harmonic number 4 has a frequency of 996 Hz?
- a) 1.53 x 10^{2} unit
- b) 1.85 x 10^{2} unit
- c) 2.24 x 10^{2} unit
- d) 2.72 x 10^{2} unit
- e) 3.29 x 10^{2} unit
98) Mr. Smith starts from rest and accelerates to 4 m/s in 3 seconds. How far did he travel?
- a) 5.0 meters
- b) 3.0 meters
- c) 6.0 meters
- d) 4.0 meters
- e) 7.0 meters
99) Mr. Smith starts from rest and accelerates to 4 m/s in 5 seconds. How far did he travel?
- a) 11.0 meters
- b) 7.0 meters
- c) 9.0 meters
- d) 8.0 meters
- e) 10.0 meters
100) Mr. Smith is driving at a speed of 7 m/s, when he slows down to a speed of 5 m/s, when he hits a wall at this speed, after travelling for 2 seconds. How far did he travel?
- a) 11.0 meters
- b) 10.0 meters
- c) 12.0 meters
- d) 9.0 meters
- e) 8.0 meters
101) Mr. Smith starts at rest and accelerates to a speed of 2 m/s, in 2 seconds. He then travels at this speed for an additional 1 seconds. Then he decelerates uniformly, taking 2 seconds to come to rest. How far did he travel?
- a) 9.0 meters
- b) 5.0 meters
- c) 7.0 meters
- d) 8.0 meters
- e) 6.0 meters
102) Mr. Smith is driving at a speed of 4 m/s, when he slows down to a speed of 1 m/s, when he hits a wall at this speed, after travelling for 4 seconds. How far did he travel?
- a) 11.0 meters
- b) 9.0 meters
- c) 7.0 meters
- d) 8.0 meters
- e) 10.0 meters
103) Mr. Smith starts at rest and accelerates to a speed of 4 m/s, in 2 seconds. He then travels at this speed for an additional 3 seconds. Then he decelerates uniformly, taking 2 seconds to come to rest. How far did he travel?
- a) 23.0 meters
- b) 21.0 meters
- c) 22.0 meters
- d) 19.0 meters
- e) 20.0 meters
104) Mr. Smith starts from rest and accelerates to 2 m/s in 3 seconds. How far did he travel?
- a) 3.0 meters
- b) 7.0 meters
- c) 5.0 meters
- d) 4.0 meters
- e) 6.0 meters
105) Mr. Smith is driving at a speed of 5 m/s, when he slows down to a speed of 4 m/s, when he hits a wall at this speed, after travelling for 2 seconds. How far did he travel?
- a) 9.0 meters
- b) 10.0 meters
- c) 12.0 meters
- d) 11.0 meters
- e) 8.0 meters
106) Mr. Smith starts at rest and accelerates to a speed of 2 m/s, in 6 seconds. He then travels at this speed for an additional 3 seconds. Then he decelerates uniformly, taking 4 seconds to come to rest. How far did he travel?
- a) 16.0 meters
- b) 19.0 meters
- c) 20.0 meters
- d) 17.0 meters
- e) 18.0 meters
107) Mr. Smith starts from rest and accelerates to 3 m/s in 2 seconds. How far did he travel?
- a) 3.0 meters
- b) 4.0 meters
- c) 1.0 meters
- d) 2.0 meters
- e) 5.0 meters
108) Mr. Smith is driving at a speed of 7 m/s, when he slows down to a speed of 5 m/s, when he hits a wall at this speed, after travelling for 4 seconds. How far did he travel?
- a) 27.0 meters
- b) 23.0 meters
- c) 26.0 meters
- d) 24.0 meters
- e) 25.0 meters
109) Mr. Smith starts at rest and accelerates to a speed of 2 m/s, in 6 seconds. He then travels at this speed for an additional 3 seconds. Then he decelerates uniformly, taking 4 seconds to come to rest. How far did he travel?
- a) 14.0 meters
- b) 16.0 meters
- c) 15.0 meters
- d) 17.0 meters
- e) 13.0 meters
110) When a table cloth is quickly pulled out from under dishes, they hardly move. This is because
- a) objects don't begin to accelerate until after the force has been applied
- b) the cloth is accelerating for such a brief time that there is little motion
- c) the cloth is more slippery when it is pulled quickly
111) If you toss a coin into the air, the acceleration while it as its highest point is
- a) down
- b) up
- c) zero
112) If you toss a coin into the air, the velocity on the way up is
- a) up
- b) down
- c) zero
113) If you toss a coin into the air, the velocity on the way down is
- a) up
- b) zero
- c) down
114) If you toss a coin into the air, the velocity while it as its highest point is
- a) zero
- b) up
- c) down
115) A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The acceleration vector points
- a) northwest
- b) north
- c) northeast
- d) south
- e) southwest
116) A car is headed due north and increasing its speed. It is also turning right because it is also traveling in a perfect circle. The acceleration vector points
- a) southwest
- b) south
- c) northwest
- d) north
- e) northeast
117) A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The velocity vector points
- a) southeast
- b) north
- c) northwest
- d) northeast
- e) northeast
118) A car is headed due north and increasing its speed. It is also turning right because it is also traveling in a perfect circle. The velocity vector points
- a) northwest
- b) south
- c) north
- d) southwest
- e) northeast
119) A car is headed due north and decreasing its speed. It is also turning left because it is also traveling in a perfect circle. The acceleration vector points
- a) west
- b) southeast
- c) south
- d) southwest
- e) northwest
120) A car is headed due north and decreasing its speed. It is also turning right because it is also traveling in a perfect circle. The acceleration vector points
- a) southeast
- b) northwest
- c) northeast
- d) north
- e) south
121) A car is traveling west and slowing down. The acceleration is
- a) to the west
- b) zero
- c) to the east
122) A car is traveling east and slowing down. The acceleration is
- a) to the east
- b) zero
- c) to the west
123) A car is traveling east and speeding up. The acceleration is
- a) to the east
- b) to the west
- c) zero
124) If you toss a coin into the air, the acceleration on the way up is
- a) zero
- b) up
- c) down
125) A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is
- a) south
- b) north
- c) west
- d) east
- e) zero
126) A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is
- a) zero
- b) west
- c) north
- d) south
- e) east
127) As the Moon circles Earth, the acceleration of the Moon is
- a) opposite the direction of the Moon's velocity
- b) zero
- c) towards Earth
- d) in the same direction as the Moon's velocity
- e) away from Earth
128) If you toss a coin into the air, the acceleration on the way down is
- a) up
- b) zero
- c) down
129) These two pulses will collide and produce
- a) positive interference
- b) negative diffraction
- c) positive diffraction
- d) negative interference
130) If a source of sound is moving towards you, the pitch becomes
- a) unchanged
- b) lower
- c) higher
131) Why do rough walls give a concert hall a “fuller” sound, compared to smooth walls?
- a) The difference in path lengths creates more reverberation.
- b) The difference in path lengths creates more echo.
- c) Rough walls make for a louder sound.
132) People don't usually perceive an echo when
- a) it takes more than a tenth of a second after the original sound to arrive
- b) it arrives at exactly the same pitch
- c) it arrives less than a tenth of a second after the original sound
- d) it arrives at a higher pitch
- e) it arrives at a lower pitch
133) A dense rope is connected to a rope with less density (i.e. fewer kilograms per meter). If the rope is stretched and a wave is sent along high density rope,
- a) the low density rope supports a wave with a lower frequency
- b) the low density rope supports a wave with a higher speed
- c) the low density rope supports a wave with a higher frequency
- d) the low density rope supports a wave with a lower speed
134) What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight (low density) region of the rope to a heavy (high density) rope?
- a) the wavelength stays the same
- b) the wavelength gets longer
- c) the wavelength gets shorter
135) When a wave is reflected off a stationary barrier, the reflected wave
- a) has higher frequency than the incident wave
- b) both of these are true
- c) has lower amplitude than the incident wave
136) Comparing a typical church to a professional baseball stadium, the church is likely to have
- a) reverberation instead of echo
- b) neither reverberation nor echo
- c) echo instead of reverberation
- d) both reverberation and echo
137) These two pulses will collide and produce
- a) negative diffraction
- b) negative interference
- c) positive diffraction
- d) positive interference
138) These two pulses will collide and produce
- a) positive interference
- b) negative diffraction
- c) positive diffraction
- d) negative interference
142) Why don't we hear beats when two different notes on a piano are played at the same time?
- a) The note is over by the time the first beat is heard
- b) Reverberation usually stifles the beats
- c) Echo usually stifles the beats
- d) The beats happen so many times per second you can't hear them.
143) A tuning fork with a frequency of 440 Hz is played simultaneously with a tuning fork of 442 Hz. How many beats are heard in 10 seconds?
- a) 40
- b) 60
- c) 50
- d) 30
- e) 20
144) If you start moving towards a source of sound, the pitch becomes
- a) higher
- b) unchanged
- c) lower
145) Integrate the line integral of, , along the y axis from y = 5 to y = 12
- a) 3.25E+04
- b) 3.48E+04
- c) 3.72E+04
- d) 3.98E+04
- e) 4.26E+04
146) Integrate the function, , along the first quadrant of a circle of radius 9
- a) 1.12E+07
- b) 1.20E+07
- c) 1.28E+07
- d) 1.37E+07
- e) 1.47E+07
147) Integrate the line integral of from the origin to the point at x = 2.9 and y = 3.7
- a) 7.31E+01
- b) 7.82E+01
- c) 8.37E+01
- d) 8.96E+01
- e) 9.58E+01
148) Integrate the function, , as a line integral around a unit square with corners at (0,0),(1,0),(1,1),(0,1). Orient the path so its direction is out of the paper by the right hand rule
- a) 3.43E-01
- b) 3.67E-01
- c) 3.92E-01
- d) 4.20E-01
- e) 4.49E-01
149) If a particle's position is given by x(t) = 7sin(3t-π/6), what is the velocity?
- a) v(t) = 21cos(3t-π/6)
- b) v(t) = -21cos(3t-π/6)
- c) v(t) = 21sin(3t-π/6)
- d) v(t) = 7cos(3t-π/6)
- e) v(t) = -21sin(3t-π/6)
150) If a particle's position is given by x(t) = 7sin(3t-π/6), what is the acceleration?
- a) a(t) = -21sin(3t-π/6)
- b) a(t) = -63sin(3t-π/6)
- c) a(t) = +21sin(3t-π/6)
- d) a(t) = -21cos(3t-π/6)
- e) a(t) = +63sin(3t-π/6)
151) If a particle's position is given by x(t) = 5cos(4t-π/6), what is the velocity?
- a) v(t) = 20cos(4t-π/6)
- b) v(t) = -20cos(4t-π/6)
- c) v(t) = 20sin(4t-π/6)
- d) v(t) = -20sin(4t-π/6)
- e) v(t) = 5sin(4t-π/6)
152) If a particle's position is given by x(t) = 5sin(4t-π/6), what is the velocity?
- a) v(t) = 20cos(4t-π/6)
- b) v(t) = -20cos(4t-π/6)
- c) v(t) = 20sin(4t-π/6)
- d) v(t) = -20sin(4t-π/6)
- e) v(t) = 5cos(4t-π/6)
153) If a particle's position is given by x(t) = 7cos(3t-π/6), what is the velocity?
- a) v(t) = -21sin(3t-π/6)
- b) v(t) = 7sin(3t-π/6)
- c) v(t) = 21cos(3t-π/6)
- d) v(t) = 21sin(3t-π/6)
- e) v(t) = -21cos(3t-π/6)
154) If a particle's position is given by x(t) = 5sin(4t-π/6), what is the acceleration?
- a) a(t) = -100cos(4t-π/6)
- b) a(t) = -80sin(4t-π/6)
- c) a(t) = +20sin(4t-π/6)
- d) a(t) = -100sin(4t-π/6)
- e) a(t) = +80sin(4t-π/6)
S_G (key)[edit]
1) A car traveling at 54 miles/hour stops in 5.2 seconds. What is the average acceleration?
- +a) 4.64 x 10^{0} m/s^{2}
- -b) 8.26 x 10^{0} m/s^{2}
- -c) 1.47 x 10^{1} m/s^{2}
- -d) 2.61 x 10^{1} m/s^{2}
- -e) 4.64 x 10^{1} m/s^{2}
2) A car completes a complete circle of radius 1.2 miles at a speed of 42 miles per hour. How many minutes does it take?
- -a) 3.41 x 10^{0} minutes
- -b) 4.54 x 10^{0} minutes
- -c) 6.06 x 10^{0} minutes
- -d) 8.08 x 10^{0} minutes
- +e) 1.08 x 10^{1} minutes
3) A car traveling at 34.7 mph increases its speed to 37.7 mph in 1.2seconds. What is the average acceleration?
- -a) 1.99 x 10^{-1} m/s^{2}
- -b) 3.53 x 10^{-1} m/s^{2}
- -c) 6.28 x 10^{-1} m/s^{2}
- +d) 1.12 x 10^{0} m/s^{2}
- -e) 1.99 x 10^{0} m/s^{2}
4) Mr. Smith is backing his car at a speed of 3.06 mph when he hits a cornfield (seed corn). In the course of 1.29 seconds he stops, puts his car in forward drive, and exits the field at a speed of 5.6 mph. What was the magnitude ( absolute value) of his acceleration?
- -a) 3.36 x 10^{0} miles per hour per second
- -b) 4.24 x 10^{0} miles per hour per second
- -c) 5.33 x 10^{0} miles per hour per second
- +d) 6.71 x 10^{0} miles per hour per second
- -e) 8.45 x 10^{0} miles per hour per second
5) A car is accelerating uniformly at an acceleration of 3.3m/s/s. At x = 5.75m, the speed is 4.95m/s. How fast is it moving at x = 13.75 m?
- -a) 5.09 m/s.
- -b) 6.11 m/s.
- -c) 7.33 m/s.
- +d) 8.79 m/s.
- -e) 10.55 m/s.
6) What is the acceleration if a car travelling at 8.45 m/s makes a skid mark that is 8.5 m long before coming to rest? (Assume uniform acceleration.)
- -a) 2.43m/s^{2}.
- -b) 2.92m/s^{2}.
- -c) 3.5m/s^{2}.
- +d) 4.2m/s^{2}.
- -e) 5.04m/s^{2}.
7) A train accelerates uniformly from 9.5 m/s to 24.5 m/s, while travelling a distance of 256 m. What is the 'average' acceleration?
- +a) 1m/s/s.
- -b) 1.2m/s/s.
- -c) 1.43m/s/s.
- -d) 1.72m/s/s.
- -e) 2.07m/s/s.
8) A particle accelerates uniformly at 17.25 m/s/s. How long does it take for the velocity to increase from 761 m/s to 1698 m/s?
- -a) 45.27 s
- +b) 54.32 s
- -c) 65.18 s
- -d) 78.22 s
- -e) 93.86 s
9) A ball is kicked horizontally from a height of 2.2 m, at a speed of 9.8m/s. How far does it travel before landing?
- +a) 6.57 m.
- -b) 7.88 m.
- -c) 9.46 m.
- -d) 11.35 m.
- -e) 13.62 m.
10) A particle is initially at the origin and moving in the x direction at a speed of 4.3 m/s. It has an constant acceleration of 1.8 m/s^{2} in the y direction, as well as an acceleration of 0.3 in the x direction. What angle does the velocity make with the x axis at time t = 2.5 s?
- -a) 36.26 degrees.
- +b) 41.7 degrees.
- -c) 47.96 degrees.
- -d) 55.15 degrees.
- -e) 63.43 degrees.
11) At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 7.34 m/s at an angle of θ above the x-axis. Particle B is initially situated at x= 2.22 m, and moves at a constant speed of 2.91 m/s in the +y direction. At what time do they meet?
- -a) 0.23 s.
- -b) 0.27 s.
- +c) 0.33 s.
- -d) 0.4 s.
- -e) 0.47 s.
12) At time, t=0, two particles are on the x axis. Particle A is (initially) at the origin and moves at a constant speed of 6.27 m/s at an angle of θ above the x-axis. Particle B is initially situated at x= 2.38 m, and moves at a constant speed of 2.94 m/s in the +y direction. What is the value of θ (in radians)?
- -a) 0.42 radians.
- +b) 0.49 radians.
- -c) 0.56 radians.
- -d) 0.65 radians.
- -e) 0.74 radians.
13) The Smith family is having fun on a high speed train travelling at 48.4 m/s. Mr. Smith is at the back of the train and fires a pellet gun with a muzzle speed of 20.7 m/s at Mrs. Smith who is at the front of the train. What is the speed of the bullet with respect to Earth?
- -a) 20.5 m/s.
- -b) 30.7 m/s.
- -c) 46.1 m/s.
- +d) 69.1 m/s.
- -e) 103.7 m/s.
14) The Smith family is having fun on a high speed train travelling at 48.4 m/s. Mrs. Smith, who is at the front of the train, fires straight towards the back with a bullet that is going forward with respect to Earth at a speed of 29 m/s. What was the muzzle speed of her bullet?
- -a) 8.6 m/s.
- -b) 12.9 m/s.
- +c) 19.4 m/s.
- -d) 29.1 m/s.
- -e) 43.7 m/s.
15) The Smith family is having fun on a high speed train travelling at 47.1 m/s. The daugher fires at Mr. Smith with a pellet gun whose muzzle speed is 29.9 m/s. She was situated across the isle, perpendicular to the length of the train. What is the speed of her bullet with respect to Earth?
- -a) 24.8 m/s.
- -b) 37.2 m/s.
- +c) 55.8 m/s.
- -d) 83.7 m/s.
- -e) 125.5 m/s.
16) The Smith family got in trouble for having fun on a high speed train travelling at 47.6 m/s. Mr. Smith is charged with having fired a pellet gun at his daughter (directly across the isle) with a bullet that had a speed of 90.4 m/s with respect to Earth. How fast was the bullet going relative to the daughter (i.e. train)?
- -a) 53.4 m/s.
- -b) 64 m/s.
- +c) 76.9 m/s.
- -d) 92.2 m/s.
- -e) 110.7 m/s.
17) A mass with weight (mg) of 49 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 54 degrees. What is the tension in the string?
- +a) 27.5 N.
- -b) 31.6 N.
- -c) 36.4 N.
- -d) 41.8 N.
- -e) 48.1 N.
18) A mass with weight (mg) equal to 21 newtons is suspended symmetrically from two strings. Each string makes the (same) angle of 66 degrees with respect to the horizontal. What is the tension in each string?
- -a) 6.6 N.
- -b) 7.6 N.
- -c) 8.7 N.
- -d) 10 N.
- +e) 11.5 N.
19) A 3.2 kg mass is sliding along a surface that has a kinetic coefficient of friction equal to 0.29 . In addition to the surface friction, there is also an air drag equal to 21 N. What is the magnitude (absolute value) of the acceleration?
- -a) 8.2 m/s^{2}.
- +b) 9.4 m/s^{2}.
- -c) 10.8 m/s^{2}.
- -d) 12.4 m/s^{2}.
- -e) 14.3 m/s^{2}.
20) A mass with weight (mg) 8.7 newtons is on a horzontal surface. It is being pulled on by a string at an angle of 30 degrees above the horizontal, with a force equal to 4.08 newtons. If this is the maximum force before the block starts to move, what is the static coefficient of friction?
- -a) 0.44
- +b) 0.53
- -c) 0.64
- -d) 0.76
- -e) 0.92
21) A sled of mass 5.9 kg is at rest on a rough surface. A string pulls with a tension of 43.6N at an angle of 38 degress above the horizontal. What is the magnitude of the friction?
- -a) 19.64 N.
- -b) 22.59 N.
- -c) 25.98 N.
- -d) 29.88 N.
- +e) 34.36 N.
22) A sled of mass 5.7 kg is at rest on a rough surface. A string pulls with a tension of 40.1N at an angle of 42 degress above the horizontal. What is the normal force?
- +a) 29.03 N.
- -b) 33.38 N.
- -c) 38.39 N.
- -d) 44.15 N.
- -e) 50.77 N.
23) A sled of mass 5.2 kg is at rest on a perfectly smooth surface. A string pulls with a tension of 46N at an angle of 32 degress above the horizontal. How long will it take to reach a speed of 9.1 m/s?
- -a) 1.05 s
- +b) 1.21 s
- -c) 1.39 s
- -d) 1.6 s
- -e) 1.84 s
24) A sled of mass 2.6 kg is on perfectly smooth surface. A string pulls with a tension of 16.4N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 3.1 m/s^{2}?
- -a) 34.6 degrees
- -b) 39.8 degrees
- -c) 45.8 degrees
- -d) 52.7 degrees
- +e) 60.6 degrees
- -a) 10.01 N.
- -b) 11.51 N.
- -c) 13.23 N.
- -d) 15.22 N.
- +e) 17.5 N.
26) In the figure "3 tensions" shown above θ_{1} is 18 degrees, and θ_{3} is 35 degrees. The tension T_{3} is 48 N. What is the weight?
- +a) 40.3 N.
- -b) 46.4 N.
- -c) 53.3 N.
- -d) 61.3 N.
- -e) 70.5 N.
- +a) 60.54 N.
- -b) 69.62 N.
- -c) 80.06 N.
- -d) 92.07 N.
- -e) 105.88 N.
- -a) 30.9 N.
- -b) 37.1 N.
- -c) 44.5 N.
- +d) 53.5 N.
- -e) 64.1 N.
- -a) 34.24 N.
- +b) 39.37 N.
- -c) 45.28 N.
- -d) 52.07 N.
- -e) 59.88 N.
- -a) 45.8 N
- -b) 52.6 N
- -c) 60.5 N
- -d) 69.6 N
- +e) 80.1 N
- -a) 12.6 m/s^{2}
- +b) 14.4 m/s^{2}
- -c) 16.6 m/s^{2}
- -d) 19.1 m/s^{2}
- -e) 22 m/s^{2}
32) Nine barefoot baseball players, with a total mass of 625 kg plays tug of war against five basketball players wearing shoes that provide a static coefficient of friction of 0.54 . The net mass of the (shoed) basketball team is 445 kg. What is the maximum coefficient of the barefoot boys if they lose?
- -a) 0.263
- -b) 0.289
- -c) 0.318
- -d) 0.35
- +e) 0.384
33) Without their shoes, members of a 9 person baseball team have a coefficient of static friction of only 0.3 . But the team wins a game of tug of war due to their superior mass of 662 kg. They are playing against a 5 person basketball team with a net mass of 430 kg. What is the maximum coefficient of static friction of the basketball team?
- -a) 0.42
- +b) 0.462
- -c) 0.508
- -d) 0.559
- -e) 0.615
- +a) 110.2 N
- -b) 126.7 N
- -c) 145.7 N
- -d) 167.6 N
- -e) 192.7 N
35) A merry-go-round has an angular frequency, , equal to 0.198 rad/sec. How many minutes does it take to complete 10.5 revolutions?
- -a) 4.83 minutes.
- +b) 5.55 minutes.
- -c) 6.39 minutes.
- -d) 7.34 minutes.
- -e) 8.45 minutes.
36) A merry-go round has a period of 0.34 minutes. What is the centripetal force on a 51.4 kg person who is standing 3.09 meters from the center?
- -a) 8.6 newtons.
- -b) 9.9 newtons.
- -c) 11.4 newtons.
- -d) 13.1 newtons.
- +e) 15.1 newtons.
37) A merry-go round has a period of 0.38 minutes. What is the minimum coefficient of static friction that would allow a 64.8 kg person to stand1.76 meters from the center, without grabbing something?
- -a) 0.008
- -b) 0.009
- -c) 0.01
- -d) 0.012
- +e) 0.014
38) What is the gravitational acceleration on a plant that is 2.59 times more massive than Earth, and a radius that is 1.75 times greater than Earths?
- +a) 8.3 m/s^{2}
- -b) 9.5 m/s^{2}
- -c) 11 m/s^{2}
- -d) 12.6 m/s^{2}
- -e) 14.5 m/s^{2}
39) What is the gravitational acceleration on a plant that is 1.47 times more dense than Earth, and a radius that is 1.42 times greater than Earth's?
- +a) 20.5 m/s^{2}
- -b) 23.5 m/s^{2}
- -c) 27.1 m/s^{2}
- -d) 31.1 m/s^{2}
- -e) 35.8 m/s^{2}
- - a) 4.44 m
- - b) 4.67 m
- + c) 4.90 m
- - d) 5.15 m
- - e) 5.40 m
- - a) 4.26E+03 m
- - b) 4.48E+03 m
- - c) 4.70E+03 m
- - d) 4.94E+03 m
- + e) 5.18E+03 m
- - a) 2.27 m
- - b) 2.38 m
- + c) 2.50 m
- - d) 2.63 m
- - e) 2.76 m
- - a) 0.608 kg
- - b) 0.638 kg
- - c) 0.670 kg
- - d) 0.703 kg
- + e) 0.739 kg
- + a) 2.30 m
- - b) 2.46 m
- - c) 2.63 m
- - d) 2.82 m
- - e) 3.02 m
59) You are riding a bicycle on a flat road. Assume no friction or air drag, and that you are coasting. Your speed is 4.9m/s, when you encounter a hill of height 1.14m. What is your speed at the top of the hill?
- - a) 1.022 m/s
- - b) 1.084 m/s
- - c) 1.149 m/s
- - d) 1.218 m/s
- + e) 1.291 m/s
60) On object of mass 2.3 kg that is moving at a velocity of 16m/s collides with a stationary object of mass 9.6 kg. What is the final velocity if they stick? (Assume no external friction.)
- -a) 1.49m/s.
- -b) 1.79m/s.
- -c) 2.15m/s.
- -d) 2.58m/s.
- +e) 3.09m/s.
61) A car of mass 674 kg is driving on an icy road at a speed of 16 m/s, when it collides with a stationary truck. After the collision they stick and move at a speed of 5.9 m/s. What was the mass of the truck?
- -a) 801 kg
- -b) 961 kg
- +c) 1154 kg
- -d) 1385 kg
- -e) 1661 kg
- +a) 55 m/s.
- -b) 58 m/s.
- -c) 62 m/s.
- -d) 67 m/s.
- -e) 71 m/s.
- -a) 4.48E+01 N
- -b) 5.63E+01 N
- -c) 7.09E+01 N
- -d) 8.93E+01 N
- +e) 1.12E+02 N
- +a) 1.03E+01 N
- -b) 1.25E+01 N
- -c) 1.52E+01 N
- -d) 1.84E+01 N
- -e) 2.23E+01 N
- -a) 3.32E+01 N
- -b) 4.02E+01 N
- +c) 4.87E+01 N
- -d) 5.90E+01 N
- -e) 7.15E+01 N
- +a) 1.43E+00 N
- -b) 1.73E+00 N
- -c) 2.10E+00 N
- -d) 2.54E+00 N
- -e) 3.08E+00 N
- -a) 3.20E+01 N
- +b) 3.87E+01 N
- -c) 4.69E+01 N
- -d) 5.69E+01 N
- -e) 6.89E+01 N
68) A car with a tire radius of 0.21 m accelerates from 0 to 29 m/s in 11 seconds. What is the angular acceleration of the wheel?
- +a) 1.26 x 10^{1} m
- -b) 1.52 x 10^{1} m
- -c) 1.84 x 10^{1} m
- -d) 2.23 x 10^{1} m
- -e) 2.7 x 10^{1} m
69) A lead filled bicycle wheel of radius 0.37 m and mass 2.1 kg is rotating at a frequency of 1.4 revolutions per second. What is the moment of inertia?
- +a) 2.87 x 10^{-1} kg m^{2}/s^{2}
- -b) 3.48 x 10^{-1} kg m^{2}/s^{2}
- -c) 4.22 x 10^{-1} kg m^{2}/s^{2}
- -d) 5.11 x 10^{-1} kg m^{2}/s^{2}
- -e) 6.19 x 10^{-1} kg m^{2}/s^{2}
70) A lead filled bicycle wheel of radius 0.4 m and mass 2.7 kg is rotating at a frequency of 1.6 revolutions per second. What is the total kinetic energy if the wheel is rolling about a stationary axis?
- -a) 1.23 x 10^{1} J
- -b) 1.49 x 10^{1} J
- -c) 1.8 x 10^{1} J
- +d) 2.18 x 10^{1} J
- -e) 2.64 x 10^{1} J
- -a) 2.83 x 10^{1} s^{-2}
- -b) 3.43 x 10^{1} s^{-2}
- +c) 4.16 x 10^{1} s^{-2}
- -d) 5.04 x 10^{1} s^{-2}
- -e) 6.11 x 10^{1} s^{-2}
72) A cylinder with a radius of 0.28 m and a length of 2.9 m is held so that the top circular face is 4.6 m below the water. The mass of the block is 880.0 kg. The mass density of water is 1000kg/m^3. What is the pressure at the top face of the cylinder?
- - 2.54E4 Pa
- - 3.07E4 Pa
- - 3.72E4 Pa
- + 4.51E4 Pa
- - 5.46E4 Pa
73) A cylinder with a radius of 0.24 m and a length of 3.8 m is held so that the top circular face is 3.5 m below the water. The mass of the block is 853.0 kg. The mass density of water is 1000kg/m^3. What is the buoyant force?
- - 5.56E3 N
- + 6.74E3 N
- - 8.16E3 N
- - 9.89E3 N
- - 1.20E4 N
74) A cylinder with a radius of 0.29 m and a length of 2.3 m is held so that the top circular face is 4.7 m below the water. The mass of the block is 968.0 kg. The mass density of water is 1000kg/m^3. What is what is the force exerted by the water at the top surface?
- - 6.10E3 N
- - 7.68E3 N
- - 9.67E3 N
- + 1.22E4 N
- - 1.53E4 N
75) A cylinder with a radius of 0.24 m and a length of 3.8 m is held so that the top circular face is 3.5 m below the water. The mass of the block is 853.0 kg. The mass density of water is 1000kg/m^3. What is the force exerted by the fluid on the bottom of the cylinder?
- - 8.17E3 Pa
- - 1.03E4 Pa
- + 1.29E4 Pa
- - 1.63E4 Pa
- - 2.05E4 Pa
76) A 7.0 cm diameter pipe can fill a 2.1 m^3 volume in 8.0 minutes. Before exiting the pipe, the diameter is reduced to 1.7 cm (with no loss of flow rate). What is the speed in the first (wider) pipe?
- +a) 1.14E0 m/s
- -b) 1.38E0 m/s
- -c) 1.67E0 m/s
- -d) 2.02E0 m/s
- -e) 2.45E0 m/s
77) A 6.3 cm diameter pipe can fill a 1.4 m^3 volume in 8.0 minutes. Before exiting the pipe, the diameter is reduced to 4.8 cm (with no loss of flow rate). What is the pressure difference (in Pascals) between the two regions of the pipe?
- -a) 4.84E2
- -b) 5.87E2
- -c) 7.11E2
- +d) 8.61E2
- -e) 1.04E3
78) A 6.5 cm diameter pipe can fill a 1.8 m^3 volume in 4.0 minutes. Before exiting the pipe, the diameter is reduced to 2.3 cm (with no loss of flow rate). If two fluid elements at the center of the pipe are separated by 30.0 mm when they are both in the wide pipe, and we neglect turbulence, what is the separation when both are in the narrow pipe?
- -a) 1.63E2 mm
- -b) 1.98E2 mm
- +c) 2.40E2 mm
- -d) 2.90E2 mm
- -e) 3.52E2 mm
79) A large cylinder is filled with water so that the bottom is 7.0 m below the waterline. At the bottom is a small hole with a diameter of 7.8E-4 m. How fast is the water flowing at the hole? (Neglect viscous effects, turbulence, and also assume that the hole is so small that no significant motion occurs at the top of the cylinder.)
- -a) 7.98E0 m/s
- -b) 9.67E0 m/s
- +c) 1.17E1 m/s
- -d) 1.42E1 m/s
- -e) 1.72E1 m/s
80) What is the root-mean-square of -19, -16, and -19?
- -a) 1.278 x 10^{1}
- -b) 1.434 x 10^{1}
- -c) 1.609 x 10^{1}
- +d) 1.806 x 10^{1}
- -e) 2.026 x 10^{1}
81) What is the rms speed of a molecule with an atomic mass of 11 if the temperature is 48 degrees Fahrenheit?
- -a) 4.5 x 10^{2} m/s
- -b) 5.45 x 10^{2} m/s
- -c) 6.6 x 10^{2} m/s
- +d) 8 x 10^{2} m/s
- -e) 9.69 x 10^{2} m/s
82) If a molecule with atomic mass equal to 8 amu has a speed of 475 m/s, what is the speed at an atom in the same atmosphere of a molecule with an atomic mass of 28 ?
- -a) 1.73 x 10^{2} m/s
- -b) 2.1 x 10^{2} m/s
- +c) 2.54 x 10^{2} m/s
- -d) 3.08 x 10^{2} m/s
- -e) 3.73 x 10^{2} m/s
83) The specific heat of water and aluminum are 4186 and 900, respectively, where the units are J/kg/Celsius. An aluminum container of mass 0.61 kg is filled with 0.21 kg of water. How much heat does it take to raise both from 21.9 C to 98.6 C?
- -a) 7.88 x 10^{4} J
- -b) 9.29 x 10^{4} J
- +c) 1.1 x 10^{5} J
- -d) 1.29 x 10^{5} J
- -e) 1.52 x 10^{5} J
84) The specific heat of water and aluminum are 4186 and 900, respectively, where the units are J/kg/Celsius. An aluminum container of mass 0.61 kg is filled with 0.21 kg of water. What fraction of the heat went into the aluminum?
- -a) 3.3 x 10^{-1}
- +b) 3.8 x 10^{-1}
- -c) 4.5 x 10^{-1}
- -d) 5.3 x 10^{-1}
- -e) 6.3 x 10^{-1}
85) The specific heat of water and aluminum are 4186 and 900, respectively, where the units are J/kg/Celsius. An aluminum container of mass 0.61 kg is filled with 0.21 kg of water. You are consulting for the flat earth society, a group of people who believe that the acceleration of gravity equals 9.8 m/s/s at all altitudes. Based on this assumption, from what height must the water and container be dropped to achieve the same change in temperature? (For comparison, Earth's radius is 6,371 kilometers)
- -a) 6.33 x 10^{0} km
- -b) 7.66 x 10^{0} km
- -c) 9.29 x 10^{0} km
- -d) 1.13 x 10^{1} km
- +e) 1.36 x 10^{1} km
86) A window is square, with a length of each side equal to 0.79 meters. The glass has a thickness of 15 mm. To decrease the heat loss, you reduce the size of the window by decreasing the length of each side by a factor of 1.33. You also increase the thickness of the glass by a factor of 2.17. If the inside and outside temperatures are unchanged, by what factor have you decreased the heat flow?. By what factor have you decreased the heat flow (assuming the same inside and outside temperatures).
- -a) 2.16 x 10^{0} unit
- -b) 2.62 x 10^{0} unit
- -c) 3.17 x 10^{0} unit
- +d) 3.84 x 10^{0} unit
- -e) 4.65 x 10^{0} unit
- -a) 4.74 x 10^{2} J
- +b) 1.5 x 10^{3} J
- -c) 4.74 x 10^{3} J
- -d) 1.5 x 10^{4} J
- -e) 4.74 x 10^{4} J
- -a) 3.75 x 10^{2} J
- -b) 1.19 x 10^{3} J
- +c) 3.75 x 10^{3} J
- -d) 1.19 x 10^{4} J
- -e) 3.75 x 10^{4} J
- +a) 3.6 x 10^{3} J
- -b) 1.14 x 10^{4} J
- -c) 3.6 x 10^{4} J
- -d) 1.14 x 10^{5} J
- -e) 3.6 x 10^{5} J
- -a) 8.59 x 10^{0} K
- -b) 2.71 x 10^{1} K
- -c) 8.59 x 10^{1} K
- -d) 2.71 x 10^{2} K
- +e) 8.59 x 10^{2} K
91) A 0.187 kg mass is on a spring that causes the frequency of oscillation to be 34 cycles per second. The maximum velocity is 90.3 m/s. What is the maximum force on the mass?
- -a) 1.7 x 10^{2} N
- -b) 3.6 x 10^{2} N
- -c) 7.8 x 10^{2} N
- -d) 1.7 x 10^{3} N
- +e) 3.6 x 10^{3} N
92) A spring with spring constant 7.8 kN/m is attached to a 5.7 gram mass. The maximum acelleration is 5.9 m/s^{2}. What is the maximum displacement?
- -a) 1.36 x 10^{-7} m
- -b) 4.31 x 10^{-7} m
- -c) 1.36 x 10^{-6} m
- +d) 4.31 x 10^{-6} m
- -e) 1.36 x 10^{-5} m
93) A spring of spring constant 8.4 kN/m causes a mass to move with a period of 2.2 ms. The maximum displacement is 2.1 mm. What is the maximum kinetic energy?
- -a) 1.85 x 10^{-3} J
- -b) 5.86 x 10^{-3} J
- +c) 1.85 x 10^{-2} J
- -d) 5.86 x 10^{-2} J
- -e) 1.85 x 10^{-1} J
94) A spring with spring constant 7.7 kN/m undergoes simple harmonic motion with a frequency of 4.4 kHz. The maximum force is 9.4 N. What is the total energy?
- -a) 5.74 x 10^{-5} J
- -b) 1.81 x 10^{-4} J
- -c) 5.74 x 10^{-4} J
- -d) 1.81 x 10^{-3} J
- +e) 5.74 x 10^{-3} J
95) The temperature is -3 degrees Celsius, and you are standing 0.66 km from a cliff. What is the echo time?
- -a) 2.949 x 10^{0} seconds
- -b) 3.184 x 10^{0} seconds
- -c) 3.438 x 10^{0} seconds
- -d) 3.713 x 10^{0} seconds
- +e) 4.009 x 10^{0} seconds
96) While standing 0.83 km from a cliff, you measure the echo time to be 4.832 seconds. What is the temperature?
- -a) 1.57 x 10^{1}Celsius
- -b) 1.81 x 10^{1}Celsius
- +c) 2.09 x 10^{1}Celsius
- -d) 2.42 x 10^{1}Celsius
- -e) 2.79 x 10^{1}Celsius
97) What is the speed of a transverse wave on a string if the string is 0.94 m long, clamped at both ends, and harmonic number 5 has a frequency of 715 Hz?
- -a) 1.83 x 10^{2} unit
- -b) 2.22 x 10^{2} unit
- +c) 2.69 x 10^{2} unit
- -d) 3.26 x 10^{2} unit
- -e) 3.95 x 10^{2} unit
98) Mr. Smith starts from rest and accelerates to 4 m/s in 3 seconds. How far did he travel?
- -a) 3.0 meters
- -b) 5.0 meters
- -c) 7.0 meters
- -d) 4.0 meters
- +e) 6.0 meters
99) Mr. Smith starts from rest and accelerates to 4 m/s in 5 seconds. How far did he travel?
- -a) 8.0 meters
- +b) 10.0 meters
- -c) 7.0 meters
- -d) 9.0 meters
- -e) 11.0 meters
100) Mr. Smith is driving at a speed of 7 m/s, when he slows down to a speed of 5 m/s, when he hits a wall at this speed, after travelling for 2 seconds. How far did he travel?
- -a) 10.0 meters
- +b) 12.0 meters
- -c) 11.0 meters
- -d) 9.0 meters
- -e) 8.0 meters
101) Mr. Smith starts at rest and accelerates to a speed of 2 m/s, in 2 seconds. He then travels at this speed for an additional 1 seconds. Then he decelerates uniformly, taking 2 seconds to come to rest. How far did he travel?
- -a) 5.0 meters
- -b) 8.0 meters
- -c) 7.0 meters
- -d) 9.0 meters
- +e) 6.0 meters
102) Mr. Smith is driving at a speed of 4 m/s, when he slows down to a speed of 1 m/s, when he hits a wall at this speed, after travelling for 4 seconds. How far did he travel?
- -a) 9.0 meters
- -b) 8.0 meters
- -c) 7.0 meters
- +d) 10.0 meters
- -e) 11.0 meters
103) Mr. Smith starts at rest and accelerates to a speed of 4 m/s, in 2 seconds. He then travels at this speed for an additional 3 seconds. Then he decelerates uniformly, taking 2 seconds to come to rest. How far did he travel?
- -a) 23.0 meters
- +b) 20.0 meters
- -c) 21.0 meters
- -d) 22.0 meters
- -e) 19.0 meters
104) Mr. Smith starts from rest and accelerates to 2 m/s in 3 seconds. How far did he travel?
- -a) 4.0 meters
- -b) 7.0 meters
- -c) 5.0 meters
- +d) 3.0 meters
- -e) 6.0 meters
105) Mr. Smith is driving at a speed of 5 m/s, when he slows down to a speed of 4 m/s, when he hits a wall at this speed, after travelling for 2 seconds. How far did he travel?
- -a) 8.0 meters
- -b) 10.0 meters
- +c) 9.0 meters
- -d) 12.0 meters
- -e) 11.0 meters
106) Mr. Smith starts at rest and accelerates to a speed of 2 m/s, in 6 seconds. He then travels at this speed for an additional 3 seconds. Then he decelerates uniformly, taking 4 seconds to come to rest. How far did he travel?
- -a) 18.0 meters
- -b) 17.0 meters
- -c) 19.0 meters
- -d) 20.0 meters
- +e) 16.0 meters
107) Mr. Smith starts from rest and accelerates to 3 m/s in 2 seconds. How far did he travel?
- -a) 2.0 meters
- -b) 1.0 meters
- -c) 4.0 meters
- -d) 5.0 meters
- +e) 3.0 meters
108) Mr. Smith is driving at a speed of 7 m/s, when he slows down to a speed of 5 m/s, when he hits a wall at this speed, after travelling for 4 seconds. How far did he travel?
- -a) 26.0 meters
- +b) 24.0 meters
- -c) 23.0 meters
- -d) 27.0 meters
- -e) 25.0 meters
109) Mr. Smith starts at rest and accelerates to a speed of 2 m/s, in 6 seconds. He then travels at this speed for an additional 3 seconds. Then he decelerates uniformly, taking 4 seconds to come to rest. How far did he travel?
- -a) 17.0 meters
- -b) 15.0 meters
- -c) 14.0 meters
- +d) 16.0 meters
- -e) 13.0 meters
110) When a table cloth is quickly pulled out from under dishes, they hardly move. This is because
- -a) the cloth is more slippery when it is pulled quickly
- -b) objects don't begin to accelerate until after the force has been applied
- +c) the cloth is accelerating for such a brief time that there is little motion
111) If you toss a coin into the air, the acceleration while it as its highest point is
- +a) down
- -b) up
- -c) zero
112) If you toss a coin into the air, the velocity on the way up is
- -a) down
- -b) zero
- +c) up
113) If you toss a coin into the air, the velocity on the way down is
- -a) up
- +b) down
- -c) zero
114) If you toss a coin into the air, the velocity while it as its highest point is
- +a) zero
- -b) down
- -c) up
115) A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The acceleration vector points
- -a) south
- +b) northwest
- -c) northeast
- -d) southwest
- -e) north
116) A car is headed due north and increasing its speed. It is also turning right because it is also traveling in a perfect circle. The acceleration vector points
- -a) southwest
- -b) northwest
- -c) north
- -d) south
- +e) northeast
117) A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The velocity vector points
- -a) southeast
- -b) northwest
- -c) northeast
- -d) northeast
- +e) north
118) A car is headed due north and increasing its speed. It is also turning right because it is also traveling in a perfect circle. The velocity vector points
- +a) north
- -b) south
- -c) southwest
- -d) northwest
- -e) northeast
119) A car is headed due north and decreasing its speed. It is also turning left because it is also traveling in a perfect circle. The acceleration vector points
- -a) southeast
- -b) northwest
- -c) south
- +d) southwest
- -e) west
120) A car is headed due north and decreasing its speed. It is also turning right because it is also traveling in a perfect circle. The acceleration vector points
- -a) northeast
- -b) northwest
- +c) southeast
- -d) north
- -e) south
121) A car is traveling west and slowing down. The acceleration is
- -a) to the west
- +b) to the east
- -c) zero
122) A car is traveling east and slowing down. The acceleration is
- -a) to the east
- +b) to the west
- -c) zero
123) A car is traveling east and speeding up. The acceleration is
- -a) zero
- +b) to the east
- -c) to the west
124) If you toss a coin into the air, the acceleration on the way up is
- -a) zero
- +b) down
- -c) up
125) A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is
- -a) south
- -b) east
- -c) north
- -d) zero
- +e) west
126) A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is
- -a) west
- -b) north
- -c) zero
- +d) east
- -e) south
127) As the Moon circles Earth, the acceleration of the Moon is
- -a) opposite the direction of the Moon's velocity
- -b) zero
- -c) in the same direction as the Moon's velocity
- +d) towards Earth
- -e) away from Earth
128) If you toss a coin into the air, the acceleration on the way down is
- -a) up
- +b) down
- -c) zero
129) These two pulses will collide and produce
- -a) positive diffraction
- -b) negative diffraction
- +c) positive interference
- -d) negative interference
130) If a source of sound is moving towards you, the pitch becomes
- -a) unchanged
- +b) higher
- -c) lower
131) Why do rough walls give a concert hall a “fuller” sound, compared to smooth walls?
- -a) Rough walls make for a louder sound.
- -b) The difference in path lengths creates more echo.
- +c) The difference in path lengths creates more reverberation.
132) People don't usually perceive an echo when
- +a) it arrives less than a tenth of a second after the original sound
- -b) it takes more than a tenth of a second after the original sound to arrive
- -c) it arrives at a lower pitch
- -d) it arrives at a higher pitch
- -e) it arrives at exactly the same pitch
133) A dense rope is connected to a rope with less density (i.e. fewer kilograms per meter). If the rope is stretched and a wave is sent along high density rope,
- -a) the low density rope supports a wave with a lower frequency
- +b) the low density rope supports a wave with a higher speed
- -c) the low density rope supports a wave with a lower speed
- -d) the low density rope supports a wave with a higher frequency
134) What happens to the wavelength on a wave on a stretched string if the wave passes from lightweight (low density) region of the rope to a heavy (high density) rope?
- -a) the wavelength stays the same
- -b) the wavelength gets shorter
- +c) the wavelength gets longer
135) When a wave is reflected off a stationary barrier, the reflected wave
- +a) has lower amplitude than the incident wave
- -b) has higher frequency than the incident wave
- -c) both of these are true
136) Comparing a typical church to a professional baseball stadium, the church is likely to have
- -a) both reverberation and echo
- +b) reverberation instead of echo
- -c) echo instead of reverberation
- -d) neither reverberation nor echo
137) These two pulses will collide and produce
- -a) positive diffraction
- -b) negative diffraction
- +c) negative interference
- -d) positive interference
138) These two pulses will collide and produce
- -a) positive diffraction
- -b) negative interference
- +c) positive interference
- -d) negative diffraction
142) Why don't we hear beats when two different notes on a piano are played at the same time?
- -a) Echo usually stifles the beats
- -b) The note is over by the time the first beat is heard
- +c) The beats happen so many times per second you can't hear them.
- -d) Reverberation usually stifles the beats
143) A tuning fork with a frequency of 440 Hz is played simultaneously with a tuning fork of 442 Hz. How many beats are heard in 10 seconds?
- -a) 60
- -b) 30
- -c) 50
- -d) 40
- +e) 20
144) If you start moving towards a source of sound, the pitch becomes
- +a) higher
- -b) lower
- -c) unchanged
145) Integrate the line integral of, , along the y axis from y = 7 to y = 18
- + a) 1.41E+05
- - b) 1.51E+05
- - c) 1.61E+05
- - d) 1.73E+05
- - e) 1.85E+05
146) Integrate the function, , along the first quadrant of a circle of radius 4
- - a) 1.14E+06
- + b) 1.21E+06
- - c) 1.30E+06
- - d) 1.39E+06
- - e) 1.49E+06
147) Integrate the line integral of from the origin to the point at x = 2.1 and y = 3.8
- + a) 4.91E+01
- - b) 5.25E+01
- - c) 5.62E+01
- - d) 6.01E+01
- - e) 6.43E+01
148) Integrate the function, , as a line integral around a unit square with corners at (0,0),(1,0),(1,1),(0,1). Orient the path so its direction is out of the paper by the right hand rule
- - a) 3.81E-01
- - b) 4.08E-01
- - c) 4.37E-01
- - d) 4.67E-01
- + e) 5.00E-01
149) If a particle's position is given by x(t) = 7sin(3t-π/6), what is the velocity?
- -a) v(t) = 7cos(3t-π/6)
- -b) v(t) = 21sin(3t-π/6)
- -c) v(t) = -21sin(3t-π/6)
- -d) v(t) = -21cos(3t-π/6)
- +e) v(t) = 21cos(3t-π/6)
150) If a particle's position is given by x(t) = 7sin(3t-π/6), what is the acceleration?
- -a) a(t) = -21sin(3t-π/6)
- +b) a(t) = -63sin(3t-π/6)
- -c) a(t) = +63sin(3t-π/6)
- -d) a(t) = +21sin(3t-π/6)
- -e) a(t) = -21cos(3t-π/6)
151) If a particle's position is given by x(t) = 5cos(4t-π/6), what is the velocity?
- -a) v(t) = -20cos(4t-π/6)
- -b) v(t) = 20cos(4t-π/6)
- -c) v(t) = 20sin(4t-π/6)
- +d) v(t) = -20sin(4t-π/6)
- -e) v(t) = 5sin(4t-π/6)
152) If a particle's position is given by x(t) = 5sin(4t-π/6), what is the velocity?
- -a) v(t) = -20sin(4t-π/6)
- -b) v(t) = 20sin(4t-π/6)
- +c) v(t) = 20cos(4t-π/6)
- -d) v(t) = -20cos(4t-π/6)
- -e) v(t) = 5cos(4t-π/6)
153) If a particle's position is given by x(t) = 7cos(3t-π/6), what is the velocity?
- -a) v(t) = 7sin(3t-π/6)
- -b) v(t) = 21cos(3t-π/6)
- -c) v(t) = -21cos(3t-π/6)
- -d) v(t) = 21sin(3t-π/6)
- +e) v(t) = -21sin(3t-π/6)
154) If a particle's position is given by x(t) = 5sin(4t-π/6), what is the acceleration?
- -a) a(t) = +20sin(4t-π/6)
- +b) a(t) = -80sin(4t-π/6)
- -c) a(t) = -100sin(4t-π/6)
- -d) a(t) = -100cos(4t-π/6)
- -e) a(t) = +80sin(4t-π/6)
List of questions for each test[edit]
questions | max | T1 | T2 | T3 | T4 | FE | oldid | q_ | 1st |
1−4 | 4 | 2 | 0 | 0 | 0 | 0 | 1417603 | ^{[1]} | ^{[2]} |
5−8 | 4 | 2 | 0 | 0 | 0 | 1 | 1410638 | ^{[3]} | ^{[4]} |
9−12 | 4 | 2 | 0 | 0 | 0 | 1 | 1411599 | ^{[5]} | ^{[6]} |
13−16 | 4 | 2 | 0 | 0 | 0 | 0 | 1411598 | ^{[7]} | ^{[8]} |
17−20 | 4 | 0 | 2 | 0 | 0 | 1 | 1411601 | ^{[9]} | ^{[10]} |
21−24 | 4 | 0 | 2 | 0 | 0 | 1 | 1411605 | ^{[11]} | ^{[12]} |
25−29 | 5 | 0 | 3 | 0 | 0 | 0 | 1411613 | ^{[13]} | ^{[14]} |
30−34 | 5 | 0 | 3 | 0 | 0 | 0 | 1417994 | ^{[15]} | ^{[16]} |
35−39 | 5 | 0 | 3 | 0 | 0 | 1 | 1418007 | ^{[17]} | ^{[18]} |
40−53 | 14 | 0 | 2 | 0 | 0 | 0 | 1411691 | ^{[19]} | ^{[20]} |
54−56 | 3 | 0 | 0 | 2 | 0 | 0 | 1380215 | ^{[21]} | ^{[22]} |
57−59 | 3 | 0 | 0 | 2 | 0 | 1 | 1380821 | ^{[23]} | ^{[24]} |
60−62 | 3 | 0 | 0 | 2 | 0 | 1 | 1418173 | ^{[25]} | ^{[26]} |
63−67 | 5 | 0 | 0 | 3 | 0 | 0 | 1418177 | ^{[27]} | ^{[28]} |
68−71 | 4 | 0 | 0 | 2 | 0 | 1 | 1412312 | ^{[29]} | ^{[30]} |
72−75 | 4 | 0 | 0 | 2 | 0 | 1 | 1412355 | ^{[31]} | ^{[32]} |
76−79 | 4 | 0 | 0 | 0 | 2 | 1 | 1412378 | ^{[33]} | ^{[34]} |
80−82 | 3 | 0 | 0 | 0 | 2 | 0 | 1412379 | ^{[35]} | ^{[36]} |
83−86 | 4 | 0 | 0 | 0 | 2 | 1 | 1412391 | ^{[37]} | ^{[38]} |
87−90 | 4 | 0 | 0 | 0 | 2 | 1 | 1412397 | ^{[39]} | ^{[40]} |
91−94 | 4 | 0 | 0 | 0 | 2 | 0 | 1412409 | ^{[41]} | ^{[42]} |
95−97 | 3 | 0 | 0 | 0 | 1 | 0 | 1418299 | ^{[43]} | ^{[44]} |
98−109 | 12 | 3 | 0 | 0 | 0 | 0 | 1395847 | ^{[45]} | ^{[46]} |
110−128 | 19 | 4 | 0 | 0 | 0 | 1 | 137851 | ^{[47]} | ^{[48]} |
129−144 | 16 | 0 | 0 | 0 | 1 | 0 | 1409885 | ^{[49]} | ^{[50]} |
145−148 | 4 | 0 | 0 | 2 | 0 | 1 | 1381800 | ^{[51]} | ^{[52]} |
149−154 | 6 | 0 | 0 | 0 | 3 | 1 | 1412603 | ^{[53]} | ^{[54]} |
First question in quiz[edit]
- ↑ a02_1Dkinem_definitions
- ↑ _{A car traveling at 35.3 miles/hour stops in 4.3 seconds. What is the average acceleration?}
- ↑ a02_1Dkinem_equations
- ↑ _{A car is accelerating uniformly at an acceleration of 4.25m/s/s. At x = 7.25m, the speed is 3.7m/s. How fast is it moving at x = 12.25 m?}
- ↑ a03_2Dkinem_2dmotion
- ↑ _{A ball is kicked horizontally from a height of 2.3 m, at a speed of 7.8m/s. How far does it travel before landing?}
- ↑ a03_2Dkinem_smithtrain
- ↑ _{The Smith family is having fun on a high speed train travelling at 49.8 m/s. Mr. Smith is at the back of the train and fires a pellet gun with a muzzle speed of 22.4 m/s at Mrs. Smith who is at the front of the train. What is the speed of the bullet with respect to Earth?}
- ↑ a04DynForce Newton_forces
- ↑ _{A mass with weight (mg) of 44 newtons is suspended symmetrically from two strings. The angle between the two strings (i.e. where they are attached to the mass) is 60 degrees. What is the tension in the string?}
- ↑ a04DynForce Newton_sled
- ↑ _{A sled of mass 5.4 kg is at rest on a rough surface. A string pulls with a tension of 43.4N at an angle of 31 degrees above the horizontal. What is the magnitude of the friction?}
- ↑ a04DynForce Newton_tensions
- ↑ _{In the figure shown, θ_{1} is 18 degrees, and θ_{3} is 34 degrees. The tension T_{3} is 24 N. What is the tension, T_{1}?
} - ↑ a05frictDragElast_3rdLaw
- ↑ _{ In the figure shown, the mass of m_{1} is 5.4 kg, and the mass of m_{2} is 3.2 kg. If the external force, F_{ext} on m_{2} is 104 N, what is the tension in the connecting string? Assume no friction is present.}
- ↑ a06uniformCircMotGravitation_friction
- ↑ _{A merry-go-round has an angular frequency, , equal to 0.15 rad/sec. How many minutes does it take to complete 8.5 revolutions? }
- ↑ a06uniformCircMotGravitation_proof
- ↑ _{ Is valid for uniform circular motion?
} - ↑ a07energy_cart1
- ↑ _{If the initial velocity after leaving the spring is 5.00 m/s, how high does it reach before coming to rest?}
- ↑ a07energy_cart2
- ↑ _{The spring constant is 561N/m, and the initial compression is 0.12m. What is the mass if the cart reaches a height of 1.38m, before coming to rest?}
- ↑ a08linearMomentumCollisions
- ↑ _{On object of mass 2.8 kg that is moving at a velocity of 23m/s collides with a stationary object of mass 20.47 kg. What is the final velocity if they stick? (Assume no external friction.)}
- ↑ a09staticsTorques_torque
- ↑ _{A massless bar of length, S = 7.6m is attached to a wall by a frictionless hinge (shown as a circle). The bar is held horizontal by a string that makes and angle θ = 37.4 degrees above the horizontal. An object of mass, M = 6kg is suspended at a length, L = 5.4m from the wall. What is the tension, T, in the string?}
- ↑ a10rotationalMotionAngMom_dynamics
- ↑ _{A car with a tire radius of 0.26 m accelerates from 0 to 36 m/s in 6.8 seconds. What is the angular acceleration of the wheel?}
- ↑ a11fluidStatics_buoyantForce
- ↑ _{A cylinder with a radius of 0.22 m and a length of 2.2 m is held so that the top circular face is 4.8 m below the water. The mass of the block is 826.0 kg. The mass density of water is 1000kg/m^3. What is the pressure at the top face of the cylinder?}
- ↑ a12fluidDynamics_pipeDiameter
- ↑ _{A 8.3 cm diameter pipe can fill a 1.7 m^3 volume in 6.0 minutes. Before exiting the pipe, the diameter is reduced to 3.0 cm (with no loss of flow rate). What is the speed in the first (wider) pipe?}
- ↑ a13TemperatureKineticTheoGasLaw_rmsTransfer
- ↑ _{What is the root-mean-square of 27, 4, and -39?}
- ↑ a14HeatTransfer_specifHeatConduct
- ↑ _{The specific heat of water and aluminum are 4186 and 900, respectively, where the units are J/kg/Celsius. An aluminum container of mass 0.98 kg is filled with 0.23 kg of water. How much heat does it take to raise both from 39.7 C to 88 C? }
- ↑ a15Thermodynamics_heatEngine
- ↑ _{ A 1241 heat cycle uses 2.8 moles of an ideal gas. The pressures and volumes are: P_{1}= 1.4 kPa, P_{2}= 2.8 kPa. The volumes are V_{1}= 2.8m^{3} and V_{4}= 5.1m^{3}. How much work is done in in one cycle?}
- ↑ a16OscillationsWaves_amplitudes
- ↑ _{A 0.156 kg mass is on a spring that causes the frequency of oscillation to be 95 cycles per second. The maximum velocity is 50.6 m/s. What is the maximum force on the mass?}
- ↑ a17PhysHearing_echoString
- ↑ _{The temperature is -2 degrees Celsius, and you are standing 0.88 km from a cliff. What is the echo time?}
- ↑ b_motionSimpleArithmetic
- ↑ _{Mr. Smith starts from rest and accelerates to 4 m/s in 3 seconds. How far did he travel?}
- ↑ b_velocityAcceleration
- ↑ _{When a table cloth is quickly pulled out from under dishes, they hardly move. This is because}
- ↑ b_waves_PC
- ↑ _{These two pulses will collide and produce}
- ↑ c07energy_lineIntegral
- ↑ _{Integrate the line integral of, , along the y axis from y = 5 to y = 14}
- ↑ c16OscillationsWaves_calculus
- ↑ _{If a particle's position is given by x(t) = 7sin(3t-π/6), what is the velocity?}