Haverford College Physics 102b-2012
-- Classical and Modern Physics II
Meets: MWF 11:30-12:30, INSC H108, optional recitation TBA
Labs (every other week): Tuesday or Wednesday, 1:15-4:00, Harris 105
Physics Clinic: W and Th evenings, 7:00-10:00, H107
Lecturer: Walter
F. Smith (610-896-1332, INSC L110)
Office hours: M 10-11, Tu 11-12, Th 10-11, F 10-11, or by appointment
Lab instructors:
Suzanne Amador Kane (610-896-1198, KINSC L103)
Office Hours: Tues. 9:30-noon, Wed. 9:30 to 11:15am and by appointment
Joseph Ochoa (610-795-6232, KINSC L102)
Thurs. 12:30-3:30pm, Fri. 1:30-3:00pm or by appointment
Scott
Shelley (INSC L207, X1310)
Syllabus (choose a format) Web
Page .. PDF ..
Word Format
Solutions
for assignments and exams (password required)
Lecture summaries
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Monday |
Wednesday |
Friday |
MLK Day |
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1-23-12
Electric field lines, fields of continuous charge distributions, field of infinite rod and plane
Web page .. PDF .. Word |
1-25-12
Electric fields of spherically symmetrical charge distributions, voltage
Web page .. PDF .. Word |
1-27-12
Equipotentials are perpendicular to electric fields, field of a solid sphere
Web page .. PDF .. Word |
1-30-12
Relations between voltage and electric field
Web page .. PDF .. Word |
2-1-12
Superposition of voltage, dielectric constant, dipoles
Web page .. PDF .. Word |
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2-8-12
Gauss's Law, electric field at the surface of a metal
Web page .. PDF .. Word |
2-10-12
Electric field at the surface of a metal (ctd.), electric current, Ohm's Law, series and parallel resistors
Web page .. PDF .. Word |
Handouts:
Mathematica keyboard shortcuts & physical constants
(This is a Mathematica notebook; save it to your computer first, then double-click to open it with Mathematica)
Sample long-form lab report
Walt's hints for a better lab report
Historical Notes, demonstrator
applets, songs, etc.
| Problem Solving Advice from Prof. Suzanne Amador Kane |
Math
Appendices -- Helpful mathematical material collected
by Haverford and Bryn Mawr Physics majors some years ago, edited
by Lyle Roelofs. (See also the math summary on Moodle.) |
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Electric Field Hockey! To get started, click on "Run Now". Arrange the positive and negative charges (drag them out of the supply) so that the puck goes into the goal. Be sure to click the buttons for "field", "Antialias" and "trace". The black vectors show the direction of the field, but not its strength. The blue vectors coming out of the puck show the forces from the negative charges, while the red vectors show the forces from the positive charges. Try varying the mass! |
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| Coulomb's Law song (karaoke version!) |
| Here's a nifty two-dimensional electric fields and voltage applet.
Use the slider bar to determine the strength and polarity
of a charge, then click to place it. For me, the "Go" feature
doesn't work well, since I can't see the charges while they're
moving. But, the displays of the field configurations and
equipotentials are pretty neat. Red equipotentials correspond
to positive voltages (relative to the voltage infinitely
far away) and blue to negative voltages.
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Carl Friederich
Gauss biography Note: Gauss did so much, especially in math, that
you will not find his law explictly mentioned here! Instead,
it is referred to as the "law of quadratic reciprocity".
He originally derived it as a purely mathematical result
for functions that fall off as 1/r^2, and then it was
applied to the electric field. |
Gauss in 1803 |
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Background
image: A rare triple lightning strike (this is not a multiple
exposure), taken on the great plains by Dr. Steven Horsburgh. |
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