A few last problems:

Chapter 29: 10, 40

Chapter 30: 5, 25, 37

Due next Wednesday

A few last problems:

Chapter 29: 10, 40

Chapter 30: 5, 25, 37

Due next Wednesday

Filed Under: Physics 2B Homework

Chapter 28 Problems:

6, 8, 9, 13, 17, 20, 29, 32, 35, 36, 40, 43

Due Friday, May 18

Filed Under: Physics 2B Homework

Chapter 27

1*, 4, 7, 8, 12, 15, 16, 20, 21, 28, 31, 36

Due Monday

For problem 1, modify it so that the sound appears to be traveling at 335 m/s and 355 m/s. The numbers listed seem fishy though.

One source stated Usain Bolt’s top speed was 43.93 km/h ( 27.3 mph) in m/s is **12.2 m/s.**

I used 12 m/s as an approximation for his max speed.

If you used the numbers listed in the book…… you would get a speed that seems unreasonable to me.

Filed Under: Physics 2B Homework

Chapter 26 Problems:

1, 5, 11, 16, 18, 20, 21, 25, 27, 30, 34, 42, 46, 51

Due Tuesday May 8.

Filed Under: Physics 2B Homework

Chapter 25 Problems:

2, 5, 8, 15, 17, 21, 23, 28, 31, 37, 42, 43, 45

Due Tuesday April 24

Filed Under: Physics 2B Homework

2, 6, 9, 11, 14, 18, 25, 28, 29, 31, 36

Due Friday.

For problem 25, look at example 24.9 and think about the relationship between period and frequency.

For problem 18, the number of turns, N, is used in the equation, but you may be able to substitute for the value using other variables.

Filed Under: Physics 2B Homework

Chapter 23 Problems:

3, 7, 16, 19, 26, 35, 38, 41, 44, 53, 57, 61

Due the Thursday after Spring Break

Filed Under: Physics 2B Homework

Chapter 22:

1, 6, 9, 18, 22, 33, 34, 37, 40, 51, 53, 55

Due Thursday

**Notes:** I looked at the book’s answer for #37 and they’re wrong. In the solutions they use an incorrect value. So you shouldn’t get their result.

There are a few ways to use the equations – Ohm’s law and the power equations, depending on how you want to start the problem.

The book’s answer for another problem wasn’t quite right either, but it was closer than what they say for #37.

**Lab:**

I will bring copies of this week’s lab in tomorrow if you would like to look at it before Thursday.

**Khan Academy:**

Follow the instructions and enter my ID by Friday to receive 5 hw extra credit points. After Friday you can get 2 points. After Monday, you will receive no points. It would still be a good thing to look at though.

Filed Under: Physics 2B Homework

Chapter 21 problems:

3, 6, 8, 13, 17, 22, 30, 34, 39, 40, 73

Filed Under: Physics 2B Homework

Due next Friday

Problems: 1, 8, 9, 13, 25, 26, 33, 35, 38, 44, 58, 63

Filed Under: Physics 2B Homework

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