Wright State University Lake Campus/2015-9/Phy2410
Phy 2410 Fall 2015
Tue 9/1[edit | edit source]
Lab: Go through syllabus, expecially lab attendance
Help students in HTW: b:FHSST Physics/Rectilinear Motion/Graphs
Do question 3 of: How things work college course/Motion simple arithmetic quiz
Lecture:
Physics equations/07-Work and Energy/Q:lineIntegral
time permitting, look at How Things Works quiz.
Thu 9/3[edit | edit source]
- Learn how to navigate Wikiversity through links on Pilot
- Learn about the Millikan Oil Drop experiment through the internet
- I am especially interested in the forces on the oil drop
- Learn about and edit your Presidental Sandbox
-
- User:Guy vandegrift/sandbox/03/Presidental sandboxes
- This course (Fall 2410) uses sandbox 3
- Get your president from the signup sheet for today's lab.
- Your lab "report" is to write "hello world" (or something else) in your Presidental Sandbox.
- Click the link, if it was red you get a "create page" banner that you can ignore.
- Write something and go to the bottom of the page
- Type anything into the Edit Summary and Save.
- Oral reports (in groups) will occur at the next lab (Tuesday)
Tue 9/8[edit | edit source]
Lecture
- Labs
AM Lab: learn about the Millikan Oil drop experiment. Write your report in the pres. sandbox. Use page for figures and equations. Focus on these four topics:
Electric Field ---- Force --- Charge ---Voltage
Explain the equation Electric field * distance *cos(angle) = change in voltage
Another word for voltage is electric potential
Thu 9/10[edit | edit source]
Go to
- Instructions from that page
- Write a one or two sentence summary of what you thought the the "How Things Work" folks did. Do not copy/paste their words unless you are confident you understand what they wrote.
- measure the slope with an uncertainty in the figure by hand. Keep in mind that "uncertainty" usually means one standard deviation, suggesting that typically 68% of the data points fall within your range.
- Repeat using Excel and/or Matlab
- Explain the formulas governing this. Use pencil and paper on equations and sketches. Put words into sandbox, referencing the equations and sketches.
Tue 9/15[edit | edit source]
- Explain this effect
- Assume knoledege of
- Electric field for linearly polarized light.
- Component of a vector along a unit vector > or ohter symbol
There is no need to cover this topic on Wikiversity because it is explained in many places. To name just a few:
- w:Polarization_(waves)#Polarization_state seems to be the most appropriate Wikipedia article
- Khan Academy: Polarization of light-linear and circular
- Physics Classroom - Polarization
Tue 9/22[edit | edit source]
Test review. No lab.
Thu 9/24[edit | edit source]
Test Review. No lab.
Tue 9/29[edit | edit source]
Ray optics 1
Thu 10/1[edit | edit source]
Ray optics 2
Tue 10/6[edit | edit source]
Ray drawings at
next time: We already did the three polaroid filters. But we have not yet done:
- diffraction
- diagram on how a single polarizing filter works.
- See Bell's theorem/Introduction#Lab_activity and [[]]
Tue 10/13[edit | edit source]
Complete the ray drawing. The object is to your left. The first lens is convex (converging) and the second lens is concave (diverging). The focal points are shown as points.
- Measure the focal lengths of both lenses and write them down (in cm = centimeters)
- Measure the distance between the lenses and write that in cm.
- Measure the distance from the object to the first (converging) lens.
- Measure the height of the object.
- Complete the ray diagram for the first image, using only the converging lens.
- Measure the distance from the first lens to the image (cm) and also measure the height of the image.
- Now make this image the new object and calculate it's image using the diverging lens.
- How tall is the final image?
- How far is the final image from the diverging lens?
- Now do the calculation using the thin lens formula and the numbers you obtained in steps 1-4
Tue 10/20[edit | edit source]
Continue with Physics and Astronomy Labs/Optics: Human eye model (Pasco)
- Front two groups put eye on metal cart when done.
- All groups place water-filled eye in leak-proof container.
- Recorded distance measurements between object and lens, between lens and image as well as image size.
Tue 11/3[edit | edit source]
Define voltage: V (volts or V as units)
- Voltage is defined as a difference that exists between two points.
- A voltage difference tends to "push" electrons through a wire.
- On a roller coaster PE=mgh. Voltage, V, is "like" gh and charge, q, is "like" m.
- Electric potential energy in Joules (J) is PE = U =
- There is another analogy: Voltage is "like" pressure in a system of pipes carrying water.
Define current: I = dq/dt (amps or A)
State Ohm's Law: V = IR (volts or V)
Thu 11/5[edit | edit source]
- Power = IV = dU/dt where U is energy. (Power is watts or Joules/second)
- The voltage across a battery usually drops if the terminals are connected to a circuit (but not in the case of an "ideal" voltage source)
- Class sketches the simplest possible graph of V versus I if V = 9 volts when I = 0, and V starts to gradually drop as current is drawn. On your graph, sketch the ideal situation as a dotted line.
- Make your "model" as simple as possible by drawing it as a straight line.
- Estimate magnitude of slope and include units.
Tue 11/10[edit | edit source]
Find power versus load resistance and for an emf of 9 volts and an internal resistance of 0.7 Ohms. Most efficient is to use P = V^2/R.
Links at bottom[edit | edit source]
- get date
- OpenStax College/University Physics
- Physics_equations/Sheet/All_chapters
- Pilot (course management system) (See Wikipedia:Course Management System)
- Presidental sandboxes
Final exam study[edit | edit source]
a18ElectricChargeField_findE | 1 |
c18ElectricChargeField_lineCharges | 1 |
c19ElectricPotentialField_GaussLaw | 1 |
a19ElectricPotentialField_KE_PE | 1 |
c19ElectricPotentialField_SurfaceIntegral | 1 |
c20ElectricCurrentResistivityOhm_PowerDriftVel | 1 |
a21CircuitsBioInstDC_circAnalQuiz1 | 1 |
a21CircuitsBioInstDC_circuits | 1 |
a21CircuitsBioInstDC_RCdecaySimple | 0 |
c22Magnetism_ampereLaw | 1 |
c22Magnetism_ampereLawSymmetry | 1 |
a22Magnetism_forces | 1 |
a23InductionACcircuits_Q1 | 1 |
c24ElectromagneticWaves_displacementCurrent | 1 |
a25GeometricOptics_image | 1 |
a25GeometricOptics_thinLenses | 1 |
a25GeometricOptics_vision | 1 |