For Classes Thursday and Friday, Oct. 15, 16

For 4 Chem-Phys classes (1-2, 8-9):
On Thursday, begin with volunteers to be at the board and, as a class, reach consensus on the homework problems. In particular, you can pull up the solutions for the 2002 AP problem with the partial ring of charge. Go through these with small groups if there are questions, and talk them through.
Once done with the problems, you can begin the lab on equipotential lines and gradients. Before starting, Lucy (in period 1-2) and Danny (in period 8-9) will demonstrate how to get your data. You will ultimately make maps of equipotential lines on the white grid paper...do not draw on the black conductive paper. You should have time to get your data today, and any extra time can be spent working on the analysis.

On Friday, start off by doing the two collaborative problems, and turn them in before leaving. The rest of the time you have to work on the lab - keep in mind that you should individually do and turn in the AP problem, and do the ActivPhysics simulations on equipotential lines. Use Internet Explorer on the school computers, which seems to work better than Chrome or Firefox. If you are unable to complete the simulations here, finish it up over the weekend.

Over the weekend:
Take a look at the video, and take notes, about finding electric potential with multiple shells of charge. We will bring in voltage with the Gauss's law next week.
If interested, there is a video on band theory, which may help understand where the 'bands' come from.


For AP Physics C (3-4):
On Thursday, begin with volunteers to be at the board and, as a class, reach consensus on the homework problems. After that, watch and take notes, and discuss if necessary, a video on potential wells. This refers to graphs of potential energy as a function of position, and also makes use of the gradient concept F = -dU/dr.  When this is done, you have time to work on the homework set for potential wells (last page of packet), and also to try and complete the lab. Whatever is left, take as homework.

On Friday, reach consensus on the AP problems on potential wells. Pull up the 1995 'Nike' problem solutions if you all wish.
When this is done, watch the DVD on string theory. This is part 2 of The Elegant Universe. Take notes on it, since we will get into modern examples next week. Finish up any lose ends of the lab before leaving.

Over the weekend:
Watch and take notes on the video about gravitational potential energy.