# AT Cycle 15

## 12/4 - 12/7

M 12/4

T 12/5

W 12/6

Th 12/7

JUMP TO LESSON:

### 🔴 2: T 12/5a, 🟡 4: M 12/4, 🔵7: M 12/4 - electric fields point charges (1)

Daily Check-in: superposition

Today, we'll tackle some problems on electric fields due to point charges from Chapter 22 (due Tuesday, December 5th at 10pm):

Required: 7, 8, 14, 15, 16-17, 19, 1981B3, 2006aB3

Enrichment: Go on to problems from ❤️ 2: W 12/6, 💛 4: Th 12/7a, 💙7: T 12/5b.

Homework: Finish electric fields due to point charges from Chapter 22 and submit to ✏️ Google Classroom by Tuesday, December 5th at 10pm. If you need to review the Intro to Electric Fields video or the Electric Force & Field video, make sure you do so. Study for Unit Test on Rotation next class - Tuesday, December 5th. NEW! ROTATION REVIEW PRESENTATION. Remember, now that we're doing AP problems, it's a good idea to do as many of them as you can find. Start by looking on AP Central for the last 10 years of practice problems. There will be one or two rotation free response problems on every AP exam.

### 🟥❗ 2: T 12/5b, 🟨❗ 4: T 12/5, 🟦❗ 7: T 12/5a - Rotation Assessment

Rotation Assessment TODAY!

Homework: Finish electric fields due to point charges from Chapter 22 and submit to ✏️ Google Classroom by tonight Tuesday, December 5th at 10pm. If you need to review the Intro to Electric Fields video or the Electric Force & Field video, make sure you do so. Also, by 📕 2: Th 12/7, 📒 4: Th 12/7b, 📘7: W 12/6, watch the following video on calculating the electric field due to a continuous distribution of charge.

### ❤️ 2: W 12/6, 💛 4: Th 12/7a, 💙7: T 12/5b - electric fields point charges (2)

Today, we'll continue to do some problems involving multiple point charges. (Note that these are from the AP Physics B test. The C test questions will be more difficult, but this is a review of what you should have learned last year.)

Required: 2000E2 (a-b), 1975B2, 2002bB5, 2003bB4, 2006bB3

You must do all of the parts of the problems which have to do with electric force and field, including the motion of a particle in the field. Parts that have to do with potential energy, work, or potential are optional for now, but if you finish early, then try to remember how to do these parts.

Homework: Electrostatics problem set 1 is due on Tuesday, December 5th. Electrostatics problem set 2 is due to ✏️ Google Classroom Thursday, December 7th at 10pm. If you need to review last night's video, make sure you do so. For next classwatch this video on calculating the electric field due to a continuous distribution of charge. (repost)

### 📕 2: Th 12/7, 📒 4: Th 12/7b, 📘7: W 12/6 - continuous charge distribution (1)

Daily Check-in: E-field continuous distribution

Today, we'll do some problems which require us to calculate the electric field due to a continuous distribution of charge:

Required: Electric field integrals #2 only (WHERE you put theta matters in what the integral looks like, but the result should be the same if you've chosen the correct limits. Here's one solution, and here's another, and here's yet another), 1981E2, redo Giancoli Example 21-10 (p. 559), and state why the book chose to solve with d(theta) rather than dy. Also, Halliday Chapter 22 #28, 29, 32, 31

Enrichment: Halliday Chapter 22 #24, 33, 65

Homework: Continuous distribution of charge problems are due in ✏️ Google Classroom on Monday, December 11th at 10pm.

Also, before class Monday, December 11th, read this page on Electric Field Lines from The Physics Classroom. Make sure that you understand the rules for drawing electric field lines. Next time, we'll be starting to talk about electric flux. If you don't remember anything about the concept of flux (we studied magnetic flux last year), watch the first 3:43 in my Faraday's Law video: