February+AP+C++Homework

**a. Hand in the problem set** below on Gauss' Law. b. Learn about capacitors by watching the 14 minute **video** at [] c. **On looseleaf** draw the parallel plate, cylyndrical and spherical capacitors as you saw them in the video, Under each drawing give their unique electric field, voltage and capacitance equations based on their geometric variables (like radius,length, width separation etc). STAMP for this on Monday. Next week we will do the checkpoints for chapter 26 on Capacitance if you would like to get ahead.
 * Friday March 1: **

24. (stamp Monday) b. Complete this Multiple Choice worksheet. (Stamp Weds if half done) Extra Credit Thursday: Explain or show **briefly** on looselaef what the natural logarithm and **e** = 2.7 has to do with the integral of **1/x dx.**
 * Week 4: Due Friday March 1 **

Friday: Test on electrostatics including formula memorization. Gauss' Law is not included on this test. See Notes & Study page.
 * ^^^^^^^^^^^^^^^ OLD MATERIAL ^^^^^^^^ STOP HERE ^^^^^^^^^^^^^^^^^^^ **
 * WEEK 3: Test & Gauss' Law **

**WEEK 2:** Feb 11-14 Extended Charge Configurations

a. **Textbook: Chapter 23 Problems** starting on page 573 using calculus-based field equations. **{5 questions = 50 pts}. Due Thursday morning.** B. **UTexas on charged objects** will open Thursday night and be due on Tuesday evening 2/ 19. **{7 questions @ 9 points. Stop when raw score = 50 pts}.**
 * 1) 27 (ring), 23 (dipole), 34 (line of charge ), 36(disk), 58 (dipole in an electric field). Make sure you read the section corresponding to each problem and follow the model sample solutions in the chapter. You must master calculations of fields around charged objects of each of these shapes.

a. __Phet SIMULATION Lab:__ We will use a simulation program E-fields and equipotential lines about charges of your own choosing at [] Find and show __all__ the 0V, + 10V and -10V equipotential lines for each of the 3 following charge configurations and mark an X at any equilibrium point where E = 0. You can draw it or print it out. Then repeat with 2 unique charge configurations of your own design.
 * 1) S T O P H E R E ###################################
 * 1) 1 [[file:triangle B.pdf]] #2[[file:Square Config 2+ and 2neg.pdf]]
 * 2) 3[[file:square in a square.pdf]] and #4 and 5 of your own design.

= pd 2: Test on //E Fields, Forces & Voltage// on UTexas: Start on Thursday and finish in class on Friday. It will close at the time posted on UTexas Friday.Week 1: Forces Fields & Voltage: Feb 4 -8th= Stamp schedule: any 3 for a stamp Monday, another 3 for another stamp Tuesday. Due Thursday.

Problems # 6, 9, 10, 20, 25, 35
b. Read Chapter 23 and do the checkpoints.

**Test 3.1** on //Electric Force, Fields and Potential// will be posted online Weds and will close Friday February 8.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ FUTURE WORK ^^^^^^^^^^^^^^^^^^^^

Week 3:Dipoles - Gauss' Law DIPOLE Experiments: Polar Molecule in an E- field at Phet: []
 * a. Lab simulation:**

1. Rotate the molecule so it is parallel to the plates, then turn on the electric field. What happens? Change the electronegativity and repeat. What is different now about the dipole moment and how it behaves in an E-Field? ? Why does it happen. 2. Design you own experiment showing how dipoles behave in an electric field. Tell what you did, what happens and what physics principles are involved..

b. MOVIE: watch the @movie on Gauss' law and answer the questions they pose in the movie. The link is [] TEXTBOOK: Week 4: Capacitance