User:Guy vandegrift/Quizbank/Archive1/How things work/Sample exam 1

HTW T1 sample

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HTW T1 sample-v1s1

1. An important principle that allows fiber optics to work is

___ a) the Doppler shift
___ b) total internal reflection
___ c) the invariance of the speed of light
___ d) partial internal absorption
___ e) total external refraction

2. 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) 20
___ e) 30

3. What are the units of Plank's constant?

___ a) all of the above
___ b) mass x velocity x distance
___ c) energy x time
___ d) none of the above
___ e) momentum x distance

4. The law of reflection applies to

___ a) telescopes but not microscopes
___ b) curved surfaces
___ c) flat surfaces
___ d) only light in a vacuum
___ e) both flat and curved surfaces

5. What are examples of energy?

___ a) ${\displaystyle {\frac {1}{2}}mv}$
___ b) heat
___ c) all of the above
___ d) momentum

6. Two signals (dashed) add to a solid

___ a) fifth
___ b) dissonance
___ c) octave

7. 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) 9.0 meters
___ b) 12.0 meters
___ c) 10.0 meters
___ d) 11.0 meters
___ e) 8.0 meters

8. A car is traveling east and slowing down. The acceleration is

___ a) zero
___ b) to the east
___ c) to the west

9. Two signals (dashed) add to a solid

___ a) dissonance
___ b) octave
___ c) fifth

10. 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 more slippery when it is pulled quickly
___ c) the cloth is accelerating for such a brief time that there is little motion

11. Excepting cases where where quantum jumps in energy are induced in another object (i.e., using only the uncertainty principle), which would NOT put a classical particle into the quantum regime?

___ a) low mass
___ b) confinement to a small space
___ c) low speed
___ d) high speed

12. 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) 10.0 meters
___ b) 7.0 meters
___ c) 11.0 meters
___ d) 9.0 meters
___ e) 8.0 meters

13. Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus?

___ a)
___ b)
___ c)

14. If you toss a coin into the air, the acceleration while it as its highest point is

___ a) up
___ b) down
___ c) zero

15.
Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
___ a) how a farsighted person might see a distant object
___ b) how a nearsighted person might see an object that is too close for comfort
___ c) how a farsighted person might see an object that is too close for comfort
___ d) how a nearsighted person might see a distant object

16. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is

___ a) north
___ b) west
___ c) south
___ d) zero
___ e) east

17. 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 higher frequency
___ b) the low density rope supports a wave with a lower frequency
___ c) the low density rope supports a wave with a lower speed
___ d) the low density rope supports a wave with a higher speed

18. A car is traveling east and speeding up. The acceleration is

___ a) zero
___ b) to the west
___ c) to the east

19. The focal point is where

___ a) rays meet whenever they pass through a lens
___ b) rays meet whenever they are forming an image
___ c) rays meet if they were parallel to the optical axis before striking a lens
___ d) rays meet if they are parallel to each other
___ e) the center of the lens

20. 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) 24.0 meters
___ c) 25.0 meters
___ d) 23.0 meters
___ e) 26.0 meters

21. 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) south
___ b) southeast
___ c) northeast
___ d) north
___ e) northwest

22. What are examples of energy?

___ a) mgh where m is mass, g is gravity, and h is height
___ b) heat
___ c) all of the above
___ d) ${\displaystyle {\frac {1}{2}}mv^{2}}$

23. 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) 11.0 meters
___ b) 9.0 meters
___ c) 8.0 meters
___ d) 12.0 meters
___ e) 10.0 meters

24. If this represents the eye looking at an object, where is this object?

___ a) directly in front of the eye (almost touching)
___ b) Two (of the other answers) are true
___ c) very far away
___ d) One focal length in front of the eye
___ e) at infinity

25. When a wave is reflected off a stationary barrier, the reflected wave

___ a) has higher frequency than the incident wave
___ b) has lower amplitude than the incident wave
___ c) both of these are true

26. If a source of sound is moving towards you, the pitch becomes

___ a) higher
___ b) lower
___ c) unchanged

27. 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

28. 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) north
___ e) northeast

29. If you toss a coin into the air, the velocity on the way up is

___ a) zero
___ b) up
___ c) down

30. Mr. Smith starts from rest and accelerates to 4 m/s in 3 seconds. How far did he travel?

___ a) 7.0 meters
___ b) 5.0 meters
___ c) 3.0 meters
___ d) 4.0 meters
___ e) 6.0 meters

Key to HTW T1 sample-v1s1

1. An important principle that allows fiber optics to work is

- a) the Doppler shift
+ b) total internal reflection
- c) the invariance of the speed of light
- d) partial internal absorption
- e) total external refraction

2. 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) 20
- e) 30

3. What are the units of Plank's constant?

+ a) all of the above
- b) mass x velocity x distance
- c) energy x time
- d) none of the above
- e) momentum x distance

4. The law of reflection applies to

- a) telescopes but not microscopes
- b) curved surfaces
- c) flat surfaces
- d) only light in a vacuum
+ e) both flat and curved surfaces

5. What are examples of energy?

- a) ${\displaystyle {\frac {1}{2}}mv}$
- b) heat
+ c) all of the above
- d) momentum

6. Two signals (dashed) add to a solid

+ a) fifth
- b) dissonance
- c) octave

7. 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) 9.0 meters
+ b) 12.0 meters
- c) 10.0 meters
- d) 11.0 meters
- e) 8.0 meters

8. A car is traveling east and slowing down. The acceleration is

- a) zero
- b) to the east
+ c) to the west

9. Two signals (dashed) add to a solid

- a) dissonance
+ b) octave
- c) fifth

10. 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 more slippery when it is pulled quickly
+ c) the cloth is accelerating for such a brief time that there is little motion

11. Excepting cases where where quantum jumps in energy are induced in another object (i.e., using only the uncertainty principle), which would NOT put a classical particle into the quantum regime?

- a) low mass
- b) confinement to a small space
- c) low speed
+ d) high speed

12. 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) 10.0 meters
- b) 7.0 meters
- c) 11.0 meters
- d) 9.0 meters
- e) 8.0 meters

13. Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus?

- a)
- b)
+ c)

14. If you toss a coin into the air, the acceleration while it as its highest point is

- a) up
+ b) down
- c) zero

15.
Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
- a) how a farsighted person might see a distant object
- b) how a nearsighted person might see an object that is too close for comfort
- c) how a farsighted person might see an object that is too close for comfort
+ d) how a nearsighted person might see a distant object

16. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is

- a) north
+ b) west
- c) south
- d) zero
- e) east

17. 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 higher frequency
- b) the low density rope supports a wave with a lower frequency
- c) the low density rope supports a wave with a lower speed
+ d) the low density rope supports a wave with a higher speed

18. A car is traveling east and speeding up. The acceleration is

- a) zero
- b) to the west
+ c) to the east

19. The focal point is where

- a) rays meet whenever they pass through a lens
- b) rays meet whenever they are forming an image
+ c) rays meet if they were parallel to the optical axis before striking a lens
- d) rays meet if they are parallel to each other
- e) the center of the lens

20. 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) 24.0 meters
- c) 25.0 meters
- d) 23.0 meters
- e) 26.0 meters

21. 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) south
+ b) southeast
- c) northeast
- d) north
- e) northwest

22. What are examples of energy?

- a) mgh where m is mass, g is gravity, and h is height
- b) heat
+ c) all of the above
- d) ${\displaystyle {\frac {1}{2}}mv^{2}}$

23. 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) 11.0 meters
+ b) 9.0 meters
- c) 8.0 meters
- d) 12.0 meters
- e) 10.0 meters

24. If this represents the eye looking at an object, where is this object?

- a) directly in front of the eye (almost touching)
+ b) Two (of the other answers) are true
- c) very far away
- d) One focal length in front of the eye
- e) at infinity

25. When a wave is reflected off a stationary barrier, the reflected wave

- a) has higher frequency than the incident wave
+ b) has lower amplitude than the incident wave
- c) both of these are true

26. If a source of sound is moving towards you, the pitch becomes

+ a) higher
- b) lower
- c) unchanged

27. 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

28. 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) north
- e) northeast

29. If you toss a coin into the air, the velocity on the way up is

- a) zero
+ b) up
- c) down

30. Mr. Smith starts from rest and accelerates to 4 m/s in 3 seconds. How far did he travel?

- a) 7.0 meters
- b) 5.0 meters
- c) 3.0 meters
- d) 4.0 meters
+ e) 6.0 meters

HTW T1 sample-v2s1

1. If a source of sound is moving towards you, the pitch becomes

___ a) higher
___ b) lower
___ c) unchanged

2. If you toss a coin into the air, the velocity on the way up is

___ a) down
___ b) up
___ c) zero

3. Mr. Smith starts from rest and accelerates to 4 m/s in 3 seconds. How far did he travel?

___ a) 4.0 meters
___ b) 5.0 meters
___ c) 6.0 meters
___ d) 7.0 meters
___ e) 3.0 meters

4. A car is traveling east and slowing down. The acceleration is

___ a) to the west
___ b) zero
___ c) to the east

5. What are the units of Plank's constant?

___ a) all of the above
___ b) momentum x distance
___ c) none of the above
___ d) mass x velocity x distance
___ e) energy x time

6. 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) 23.0 meters
___ b) 27.0 meters
___ c) 26.0 meters
___ d) 24.0 meters
___ e) 25.0 meters

7. The focal point is where

___ a) rays meet if they are parallel to each other
___ b) rays meet if they were parallel to the optical axis before striking a lens
___ c) rays meet whenever they are forming an image
___ d) the center of the lens
___ e) rays meet whenever they pass through a lens

8. A car is traveling east and speeding up. The acceleration is

___ a) to the west
___ b) to the east
___ c) zero

9. 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) northeast
___ b) southeast
___ c) northwest
___ d) northeast
___ e) north

10. 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) 50
___ c) 20
___ d) 30
___ e) 60

11. When a wave is reflected off a stationary barrier, the reflected wave

___ a) both of these are true
___ b) has higher frequency than the incident wave
___ c) has lower amplitude than the incident wave

12. If this represents the eye looking at an object, where is this object?

___ a) at infinity
___ b) One focal length in front of the eye
___ c) Two (of the other answers) are true
___ d) directly in front of the eye (almost touching)
___ e) very far away

13. Excepting cases where where quantum jumps in energy are induced in another object (i.e., using only the uncertainty principle), which would NOT put a classical particle into the quantum regime?

___ a) low speed
___ b) low mass
___ c) confinement to a small space
___ d) high speed

14. Two signals (dashed) add to a solid

___ a) fifth
___ b) octave
___ c) dissonance

15.
Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
___ a) how a farsighted person might see an object that is too close for comfort
___ b) how a nearsighted person might see an object that is too close for comfort
___ c) how a nearsighted person might see a distant object
___ d) how a farsighted person might see a distant object

16. 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 higher frequency
___ b) the low density rope supports a wave with a lower speed
___ c) the low density rope supports a wave with a higher speed
___ d) the low density rope supports a wave with a lower frequency

17. 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) 12.0 meters
___ b) 10.0 meters
___ c) 8.0 meters
___ d) 11.0 meters
___ e) 9.0 meters

18. Two signals (dashed) add to a solid

___ a) octave
___ b) fifth
___ c) dissonance

19. What are examples of energy?

___ a) ${\displaystyle {\frac {1}{2}}mv}$
___ b) heat
___ c) momentum
___ d) all of the above

20. 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 gets shorter
___ b) the wavelength stays the same
___ c) the wavelength gets longer

21. If you toss a coin into the air, the acceleration while it as its highest point is

___ a) down
___ b) zero
___ c) up

22. 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) northeast
___ c) north
___ d) northwest
___ e) south

23. 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) 8.0 meters
___ b) 10.0 meters
___ c) 9.0 meters
___ d) 11.0 meters
___ e) 12.0 meters

24. 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 more slippery when it is pulled quickly
___ c) the cloth is accelerating for such a brief time that there is little motion

25. 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) 10.0 meters
___ c) 9.0 meters
___ d) 8.0 meters
___ e) 7.0 meters

26. The law of reflection applies to

___ a) both flat and curved surfaces
___ b) telescopes but not microscopes
___ c) curved surfaces
___ d) only light in a vacuum
___ e) flat surfaces

27. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is

___ a) east
___ b) west
___ c) north
___ d) south
___ e) zero

28. Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus?

___ a)
___ b)
___ c)

29. An important principle that allows fiber optics to work is

___ a) total external refraction
___ b) total internal reflection
___ c) the Doppler shift
___ d) the invariance of the speed of light
___ e) partial internal absorption

30. What are examples of energy?

___ a) mgh where m is mass, g is gravity, and h is height
___ b) all of the above
___ c) ${\displaystyle {\frac {1}{2}}mv^{2}}$
___ d) heat

Key to HTW T1 sample-v2s1

1. If a source of sound is moving towards you, the pitch becomes

+ a) higher
- b) lower
- c) unchanged

2. If you toss a coin into the air, the velocity on the way up is

- a) down
+ b) up
- c) zero

3. Mr. Smith starts from rest and accelerates to 4 m/s in 3 seconds. How far did he travel?

- a) 4.0 meters
- b) 5.0 meters
+ c) 6.0 meters
- d) 7.0 meters
- e) 3.0 meters

4. A car is traveling east and slowing down. The acceleration is

+ a) to the west
- b) zero
- c) to the east

5. What are the units of Plank's constant?

+ a) all of the above
- b) momentum x distance
- c) none of the above
- d) mass x velocity x distance
- e) energy x time

6. 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) 23.0 meters
- b) 27.0 meters
- c) 26.0 meters
+ d) 24.0 meters
- e) 25.0 meters

7. The focal point is where

- a) rays meet if they are parallel to each other
+ b) rays meet if they were parallel to the optical axis before striking a lens
- c) rays meet whenever they are forming an image
- d) the center of the lens
- e) rays meet whenever they pass through a lens

8. A car is traveling east and speeding up. The acceleration is

- a) to the west
+ b) to the east
- c) zero

9. 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) northeast
- b) southeast
- c) northwest
- d) northeast
+ e) north

10. 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) 50
+ c) 20
- d) 30
- e) 60

11. When a wave is reflected off a stationary barrier, the reflected wave

- a) both of these are true
- b) has higher frequency than the incident wave
+ c) has lower amplitude than the incident wave

12. If this represents the eye looking at an object, where is this object?

- a) at infinity
- b) One focal length in front of the eye
+ c) Two (of the other answers) are true
- d) directly in front of the eye (almost touching)
- e) very far away

13. Excepting cases where where quantum jumps in energy are induced in another object (i.e., using only the uncertainty principle), which would NOT put a classical particle into the quantum regime?

- a) low speed
- b) low mass
- c) confinement to a small space
+ d) high speed

14. Two signals (dashed) add to a solid

- a) fifth
+ b) octave
- c) dissonance

15.
Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
- a) how a farsighted person might see an object that is too close for comfort
- b) how a nearsighted person might see an object that is too close for comfort
+ c) how a nearsighted person might see a distant object
- d) how a farsighted person might see a distant object

16. 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 higher frequency
- b) the low density rope supports a wave with a lower speed
+ c) the low density rope supports a wave with a higher speed
- d) the low density rope supports a wave with a lower frequency

17. 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) 12.0 meters
- b) 10.0 meters
- c) 8.0 meters
- d) 11.0 meters
+ e) 9.0 meters

18. Two signals (dashed) add to a solid

- a) octave
+ b) fifth
- c) dissonance

19. What are examples of energy?

- a) ${\displaystyle {\frac {1}{2}}mv}$
- b) heat
- c) momentum
+ d) all of the above

20. 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 gets shorter
- b) the wavelength stays the same
+ c) the wavelength gets longer

21. If you toss a coin into the air, the acceleration while it as its highest point is

+ a) down
- b) zero
- c) up

22. 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) northeast
- c) north
- d) northwest
- e) south

23. 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) 8.0 meters
- b) 10.0 meters
- c) 9.0 meters
- d) 11.0 meters
+ e) 12.0 meters

24. 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 more slippery when it is pulled quickly
+ c) the cloth is accelerating for such a brief time that there is little motion

25. 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) 10.0 meters
- c) 9.0 meters
- d) 8.0 meters
- e) 7.0 meters

26. The law of reflection applies to

+ a) both flat and curved surfaces
- b) telescopes but not microscopes
- c) curved surfaces
- d) only light in a vacuum
- e) flat surfaces

27. A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is

- a) east
+ b) west
- c) north
- d) south
- e) zero

28. Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus?

- a)
- b)
+ c)

29. An important principle that allows fiber optics to work is

- a) total external refraction
+ b) total internal reflection
- c) the Doppler shift
- d) the invariance of the speed of light
- e) partial internal absorption

30. What are examples of energy?

- a) mgh where m is mass, g is gravity, and h is height
+ b) all of the above
- c) ${\displaystyle {\frac {1}{2}}mv^{2}}$
- d) heat

HTW T1 sample-v1s2

1. If you toss a coin into the air, the acceleration on the way down is

___ a) down
___ b) up
___ c) zero

2. 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.

3. If you toss a coin into the air, the velocity on the way down is

___ a) zero
___ b) up
___ c) down

4. 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) southwest
___ b) northwest
___ c) north
___ d) northeast
___ e) south

5. 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) 13.0 meters
___ b) 16.0 meters
___ c) 15.0 meters
___ d) 17.0 meters
___ e) 14.0 meters

6. The focal point is where

___ a) rays meet if they are parallel to each other
___ b) rays meet whenever they are forming an image
___ c) rays meet if they were parallel to the optical axis before striking a lens
___ d) the center of the lens
___ e) rays meet whenever they pass through a lens

7. 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) 40
___ c) 30
___ d) 20
___ e) 50

8. A car is traveling east and speeding up. The acceleration is

___ a) to the east
___ b) zero
___ c) to the west

9. 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) north
___ b) northeast
___ c) southwest
___ d) northwest
___ e) south

10. What are examples of energy?

___ a) momentum
___ b) all of the above
___ c) ${\displaystyle {\frac {1}{2}}mv}$
___ d) heat

11. Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus?

___ a)
___ b)
___ c)

12. When light passes from air to glass

___ a) it bends away from the normal
___ b) the frequency increases
___ c) it does not bend
___ d) it bends towards the normal
___ e) the frequency decreases

13. In optics, normal means

___ a) parallel to the surface
___ b) to the right of the optical axis
___ c) to the left of the optical axis
___ d) perpendicular to the surface

14. The first paper that introduced quantum mechanics was the study of

___ a) light
___ b) energy
___ c) electrons
___ d) protons

15. Which lens has the shorter focal length?

___ a)
___ b)
___ c) They have the same focal lengh.

16. These two pulses will collide and produce

___ a) negative interference
___ b) positive interference
___ c) positive diffraction
___ d) negative diffraction

17. A car is traveling east and slowing down. The acceleration is

___ a) to the east
___ b) to the west
___ c) zero

18. What are examples of energy?

___ a) heat
___ b) mgh where m is mass, g is gravity, and h is height
___ c) ${\displaystyle {\frac {1}{2}}mv^{2}}$
___ d) all of the above

19. Mr. Smith starts from rest and accelerates to 4 m/s in 5 seconds. How far did he travel?

___ a) 10.0 meters
___ b) 8.0 meters
___ c) 11.0 meters
___ d) 7.0 meters
___ e) 9.0 meters

20. What are the units of Plank's constant?

___ a) momentum x distance x mass
___ b) energy x time
___ c) none of the above
___ d) mass x velocity
___ e) all of the above

21. 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 higher 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 lower frequency

22. 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) north
___ b) southeast
___ c) northwest
___ d) northeast
___ e) northeast

23. Mr. Smith starts from rest and accelerates to 2 m/s in 3 seconds. How far did he travel?

___ a) 7.0 meters
___ b) 4.0 meters
___ c) 3.0 meters
___ d) 5.0 meters
___ e) 6.0 meters

24. 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) 20.0 meters
___ b) 17.0 meters
___ c) 16.0 meters
___ d) 18.0 meters
___ e) 19.0 meters

25. 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.

26. 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) 21.0 meters
___ b) 22.0 meters
___ c) 19.0 meters
___ d) 23.0 meters
___ e) 20.0 meters

27. These two pulses will collide and produce

___ a) positive interference
___ b) negative interference
___ c) positive diffraction
___ d) negative diffraction

28. As the Moon circles Earth, the acceleration of the Moon is

___ a) in the same direction as the Moon's velocity
___ b) away from Earth
___ c) opposite the direction of the Moon's velocity
___ d) towards Earth
___ e) zero

29. If a source of sound is moving towards you, the pitch becomes

___ a) unchanged
___ b) lower
___ c) higher

30.
Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
___ a) how a farsighted person might see an object that is too close for comfort
___ b) how a nearsighted person might see a distant object
___ c) how a nearsighted person might see an object that is too close for comfort
___ d) how a farsighted person might see a distant object

Key to HTW T1 sample-v1s2

1. If you toss a coin into the air, the acceleration on the way down is

+ a) down
- b) up
- c) zero

2. 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.

3. If you toss a coin into the air, the velocity on the way down is

- a) zero
- b) up
+ c) down

4. 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) southwest
- b) northwest
+ c) north
- d) northeast
- e) south

5. 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) 13.0 meters
+ b) 16.0 meters
- c) 15.0 meters
- d) 17.0 meters
- e) 14.0 meters

6. The focal point is where

- a) rays meet if they are parallel to each other
- b) rays meet whenever they are forming an image
+ c) rays meet if they were parallel to the optical axis before striking a lens
- d) the center of the lens
- e) rays meet whenever they pass through a lens

7. 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) 40
- c) 30
+ d) 20
- e) 50

8. A car is traveling east and speeding up. The acceleration is

+ a) to the east
- b) zero
- c) to the west

9. 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) north
+ b) northeast
- c) southwest
- d) northwest
- e) south

10. What are examples of energy?

- a) momentum
+ b) all of the above
- c) ${\displaystyle {\frac {1}{2}}mv}$
- d) heat

11. Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus?

- a)
+ b)
- c)

12. When light passes from air to glass

- a) it bends away from the normal
- b) the frequency increases
- c) it does not bend
+ d) it bends towards the normal
- e) the frequency decreases

13. In optics, normal means

- a) parallel to the surface
- b) to the right of the optical axis
- c) to the left of the optical axis
+ d) perpendicular to the surface

14. The first paper that introduced quantum mechanics was the study of

+ a) light
- b) energy
- c) electrons
- d) protons

15. Which lens has the shorter focal length?

- a)
+ b)
- c) They have the same focal lengh.

16. These two pulses will collide and produce

+ a) negative interference
- b) positive interference
- c) positive diffraction
- d) negative diffraction

17. A car is traveling east and slowing down. The acceleration is

- a) to the east
+ b) to the west
- c) zero

18. What are examples of energy?

- a) heat
- b) mgh where m is mass, g is gravity, and h is height
- c) ${\displaystyle {\frac {1}{2}}mv^{2}}$
+ d) all of the above

19. Mr. Smith starts from rest and accelerates to 4 m/s in 5 seconds. How far did he travel?

+ a) 10.0 meters
- b) 8.0 meters
- c) 11.0 meters
- d) 7.0 meters
- e) 9.0 meters

20. What are the units of Plank's constant?

- a) momentum x distance x mass
- b) energy x time
- c) none of the above
- d) mass x velocity
+ e) all of the above

21. 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 higher 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 lower frequency

22. 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) north
- b) southeast
- c) northwest
- d) northeast
- e) northeast

23. Mr. Smith starts from rest and accelerates to 2 m/s in 3 seconds. How far did he travel?

- a) 7.0 meters
- b) 4.0 meters
+ c) 3.0 meters
- d) 5.0 meters
- e) 6.0 meters

24. 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) 20.0 meters
- b) 17.0 meters
+ c) 16.0 meters
- d) 18.0 meters
- e) 19.0 meters

25. 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.

26. 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) 21.0 meters
- b) 22.0 meters
- c) 19.0 meters
- d) 23.0 meters
+ e) 20.0 meters

27. These two pulses will collide and produce

+ a) positive interference
- b) negative interference
- c) positive diffraction
- d) negative diffraction

28. As the Moon circles Earth, the acceleration of the Moon is

- a) in the same direction as the Moon's velocity
- b) away from Earth
- c) opposite the direction of the Moon's velocity
+ d) towards Earth
- e) zero

29. If a source of sound is moving towards you, the pitch becomes

- a) unchanged
- b) lower
+ c) higher

30.
Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
- a) how a farsighted person might see an object that is too close for comfort
+ b) how a nearsighted person might see a distant object
- c) how a nearsighted person might see an object that is too close for comfort
- d) how a farsighted person might see a distant object

HTW T1 sample-v2s2

1. What are the units of Plank's constant?

___ a) all of the above
___ b) momentum x distance x mass
___ c) energy x time
___ d) none of the above
___ e) mass x velocity

2. Which lens has the shorter focal length?

___ a) They have the same focal lengh.
___ b)
___ c)

3. If you toss a coin into the air, the velocity on the way down is

___ a) zero
___ b) up
___ c) down

4. 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) 20
___ d) 30
___ e) 50

5. If a source of sound is moving towards you, the pitch becomes

___ a) lower
___ b) unchanged
___ c) higher

6. In optics, normal means

___ a) to the left of the optical axis
___ b) to the right of the optical axis
___ c) perpendicular to the surface
___ d) parallel to the surface

7. 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) 9.0 meters
___ d) 11.0 meters
___ e) 7.0 meters

8. 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) Rough walls make for a louder sound.
___ c) The difference in path lengths creates more echo.

9. When light passes from air to glass

___ a) the frequency increases
___ b) it bends towards the normal
___ c) it does not bend
___ d) it bends away from the normal
___ e) the frequency decreases

10. These two pulses will collide and produce

___ a) negative diffraction
___ b) positive diffraction
___ c) negative interference
___ d) positive interference

11. A car is traveling east and speeding up. The acceleration is

___ a) to the west
___ b) zero
___ c) to the east

12. The focal point is where

___ a) rays meet if they are parallel to each other
___ b) rays meet whenever they pass through a lens
___ c) the center of the lens
___ d) rays meet if they were parallel to the optical axis before striking a lens
___ e) rays meet whenever they are forming an image

13. The first paper that introduced quantum mechanics was the study of

___ a) electrons
___ b) light
___ c) energy
___ d) protons

14. If you toss a coin into the air, the acceleration on the way down is

___ a) up
___ b) zero
___ c) down

15. 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 frequency
___ c) the low density rope supports a wave with a lower speed
___ d) the low density rope supports a wave with a higher speed

16. A car is traveling east and slowing down. The acceleration is

___ a) zero
___ b) to the east
___ c) to the west

17. 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) north
___ b) south
___ c) southwest
___ d) northwest
___ e) northeast

18. 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) south
___ b) north
___ c) southwest
___ d) northwest
___ e) northeast

19. 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) 15.0 meters
___ b) 16.0 meters
___ c) 17.0 meters
___ d) 14.0 meters
___ e) 13.0 meters

20. What are examples of energy?

___ a) mgh where m is mass, g is gravity, and h is height
___ b) heat
___ c) ${\displaystyle {\frac {1}{2}}mv^{2}}$
___ d) all of the above

21. What are examples of energy?

___ a) heat
___ b) all of the above
___ c) ${\displaystyle {\frac {1}{2}}mv}$
___ d) momentum

22. Mr. Smith starts from rest and accelerates to 2 m/s in 3 seconds. How far did he travel?

___ a) 4.0 meters
___ b) 3.0 meters
___ c) 6.0 meters
___ d) 7.0 meters
___ e) 5.0 meters

23. 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) 22.0 meters
___ b) 20.0 meters
___ c) 21.0 meters
___ d) 23.0 meters
___ e) 19.0 meters

24.
Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
___ a) how a nearsighted person might see a distant object
___ b) how a farsighted person might see an object that is too close for comfort
___ c) how a farsighted person might see a distant object
___ d) how a nearsighted person might see an object that is too close for comfort

25. Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus?

___ a)
___ b)
___ c)

26. As the Moon circles Earth, the acceleration of the Moon is

___ a) zero
___ b) in the same direction as the Moon's velocity
___ c) opposite the direction of the Moon's velocity
___ d) towards Earth
___ e) away from Earth

27. Why don't we hear beats when two different notes on a piano are played at the same time?

___ a) The beats happen so many times per second you can't hear them.
___ b) Reverberation usually stifles the beats
___ c) The note is over by the time the first beat is heard
___ d) Echo usually stifles the beats

28. 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) 17.0 meters
___ c) 20.0 meters
___ d) 18.0 meters
___ e) 19.0 meters

29. 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) northeast
___ b) northwest
___ c) southeast
___ d) northeast
___ e) north

30. These two pulses will collide and produce

___ a) negative diffraction
___ b) positive diffraction
___ c) positive interference
___ d) negative interference

Key to HTW T1 sample-v2s2

1. What are the units of Plank's constant?

+ a) all of the above
- b) momentum x distance x mass
- c) energy x time
- d) none of the above
- e) mass x velocity

2. Which lens has the shorter focal length?

- a) They have the same focal lengh.
- b)
+ c)

3. If you toss a coin into the air, the velocity on the way down is

- a) zero
- b) up
+ c) down

4. 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) 20
- d) 30
- e) 50

5. If a source of sound is moving towards you, the pitch becomes

- a) lower
- b) unchanged
+ c) higher

6. In optics, normal means

- a) to the left of the optical axis
- b) to the right of the optical axis
+ c) perpendicular to the surface
- d) parallel to the surface

7. 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) 9.0 meters
- d) 11.0 meters
- e) 7.0 meters

8. 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) Rough walls make for a louder sound.
- c) The difference in path lengths creates more echo.

9. When light passes from air to glass

- a) the frequency increases
+ b) it bends towards the normal
- c) it does not bend
- d) it bends away from the normal
- e) the frequency decreases

10. These two pulses will collide and produce

- a) negative diffraction
- b) positive diffraction
+ c) negative interference
- d) positive interference

11. A car is traveling east and speeding up. The acceleration is

- a) to the west
- b) zero
+ c) to the east

12. The focal point is where

- a) rays meet if they are parallel to each other
- b) rays meet whenever they pass through a lens
- c) the center of the lens
+ d) rays meet if they were parallel to the optical axis before striking a lens
- e) rays meet whenever they are forming an image

13. The first paper that introduced quantum mechanics was the study of

- a) electrons
+ b) light
- c) energy
- d) protons

14. If you toss a coin into the air, the acceleration on the way down is

- a) up
- b) zero
+ c) down

15. 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 frequency
- c) the low density rope supports a wave with a lower speed
+ d) the low density rope supports a wave with a higher speed

16. A car is traveling east and slowing down. The acceleration is

- a) zero
- b) to the east
+ c) to the west

17. 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) north
- b) south
- c) southwest
- d) northwest
+ e) northeast

18. 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) south
+ b) north
- c) southwest
- d) northwest
- e) northeast

19. 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) 15.0 meters
+ b) 16.0 meters
- c) 17.0 meters
- d) 14.0 meters
- e) 13.0 meters

20. What are examples of energy?

- a) mgh where m is mass, g is gravity, and h is height
- b) heat
- c) ${\displaystyle {\frac {1}{2}}mv^{2}}$
+ d) all of the above

21. What are examples of energy?

- a) heat
+ b) all of the above
- c) ${\displaystyle {\frac {1}{2}}mv}$
- d) momentum

22. Mr. Smith starts from rest and accelerates to 2 m/s in 3 seconds. How far did he travel?

- a) 4.0 meters
+ b) 3.0 meters
- c) 6.0 meters
- d) 7.0 meters
- e) 5.0 meters

23. 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) 22.0 meters
+ b) 20.0 meters
- c) 21.0 meters
- d) 23.0 meters
- e) 19.0 meters

24.
Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates
+ a) how a nearsighted person might see a distant object
- b) how a farsighted person might see an object that is too close for comfort
- c) how a farsighted person might see a distant object
- d) how a nearsighted person might see an object that is too close for comfort

25. Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus?

- a)
- b)
+ c)

26. As the Moon circles Earth, the acceleration of the Moon is

- a) zero
- b) in the same direction as the Moon's velocity
- c) opposite the direction of the Moon's velocity
+ d) towards Earth
- e) away from Earth

27. Why don't we hear beats when two different notes on a piano are played at the same time?

+ a) The beats happen so many times per second you can't hear them.
- b) Reverberation usually stifles the beats
- c) The note is over by the time the first beat is heard
- d) Echo usually stifles the beats

28. 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) 17.0 meters
- c) 20.0 meters
- d) 18.0 meters
- e) 19.0 meters

29. 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) northeast
- b) northwest
- c) southeast
- d) northeast
+ e) north

30. These two pulses will collide and produce

- a) negative diffraction
- b) positive diffraction
+ c) positive interference
- d) negative interference

http://en.wikiversity.org/w/index.php?title=Physics_equations/25-Geometric_Optics/Q:image&oldid=1395836
http://en.wikiversity.org/wiki/How_things_work_college_course/Waves_(Physics_Classroom)
http://en.wikiversity.org/w/index.php?title=How_things_work_college_course/Quantum_mechanics_timeline/Quiz&oldid=1396075
http://en.wikiversity.org/w/index.php?title=How_things_work_college_course/Motion_simple_arithmetic&oldid=1395847
http://en.wikiversity.org/w/index.php?title=How_things_work_college_course/Conceptual_physics_wikiquizzes/Velocity_and_acceleration&oldid=137851
http://en.wikiversity.org/w/index.php?title=Physics_equations/25-Geometric_Optics/Q:vision&oldid=1378615
Study guide
http://en.wikiversity.org/w/index.php?title=Light_and_optics&oldid=1326970
http://en.wikipedia.org/wiki/Optics
http://www.physicsclassroom.com/class/waves
http://en.wikiversity.org/w/index.php?title=How_things_work_college_course/Quantum_mechanics_timeline&oldid=1383060
http://en.wikiversity.org/w/index.php?title=Physics_equations/Sheet/All_chapters&oldid=1283423
http://en.wikibooks.org/w/index.php?title=Physics_Study_Guide&oldid=2516212
http://en.wikiversity.org/wiki/Physics_equations/Sheet/All_chapters
http://en.wikiversity.org/wiki/Light_and_optics