WARM-UP:
1 & 2: See board, left side
CLASSWORK:
1. #086A: HW Review
2. #086B: Electric fields LINK
3. #086C: Calculating Charge
4. #086D: Drawing Electric Field Lines & Ranking Charge Strength
ANNOUNCEMENTS
1. Friction Rods Activity is now due Monday
2. Complete the Handout on Electric Fields and Electric Field Lines (2 sides) (extra copies are on the seat next to my computer, or links to the handouts are on Day 86). Due Monday. Note: There will be a video posted here on Friday (LINK) covering how to complete the table in problem number 9.
3. Practice problems from Friday (today in class) are due Monday.
4. Extra Credit Opportunities: Due by Wednesday
A. 20 classwork points: Complete all four electric field charts correctly. Incorrect = zero points LINK
B. 10 homework points: Complete the Polarization activity (print out the handout, or recreate the drawing on a piece of paper) here: LINK
HOMEWORK
1. Watch Mr. P's (Flipping Physics) video (in HD, so you can see the board) on Electric Potential Energy. Keep in mind, this is very similar to Gravitational Potential Energy, so look for connections between the two concepts. Answer the following questions while watching...(questions are in chronological order)
1. In terms of energy, what happens to the green medicine ball when Mr. P drops it?
2. In terms of energy, what happens to the positively charged tennis ball when Mr. P drops it?
3. Which force causes Gravitational Potential Energy? Which causes Electric Potential Energy?
4. List the four types of mechanical energy (keep in mind, what we called energy of a "spring", he calls "elastic". Same meaning though)
5. For Gravitational Potential Energy, we use the equation PEg=mgh, where h is the vertical height, because the gravitational field is vertical. For Electric Potential Energy, what equation do we use, and what is the special rule for the displacement?
6. Copy the derivation of the units for PEele along with Mr. P. What are the units for all energies (PEele included)?