CP Physics (Period 1) Assignments

https://sites.google.com/site/mooneycoaster/

Questions to answer after watching The Elegant Universe

Standards HW

Part 1: Motion and Forces

This activity uses the website:
http://phet.colorado.edu/en/simulation/faraday

Make sure you read the directions.

The book presents concepts in a slightly different order than we will cover them in class. If you come across a problem you don't know how to do, go back and read the textbook. You can also skip ahead to later problems on topics we have already covered.

Ch 24
33-39 42 53 57-66 72-75 79 88

Ch 25
25-29 31 33 34 47 49 50 52 60-63 73 74

These questions are based on the movie we will watch on 3/24. If you are absent the day we view the film, you can find the answers through other means (books, internet resources, etc.)

Reminder that your Circuits Test is on Thursday 3/17

You should be able to finish this activity in one class period. We will start it on Monday. If you don't finish, you will be able to work on Tuesday in class. You should answer as much as you can for homework on Monday night so you are ready to ask questions in class on Tuesday. The assignment is due Wednesday.

Note the directions. If I can't follow your work you won't receive credit. Getting the right answer is not important. What is important is following the steps to arrive at the answer.
Don't be afraid to use multiple sheets of paper. Make your diagrams easy to read so you can easily find the next step.

There are two errors on the answer key
#4: I3 should be 0.0345A not 0.345A
#7: Rt= 3.79ohms and It=2.63A
Sorry about that

We will start this lab on Friday. It is due Tuesday 3/8

You should answer all questions directly on the handout.

It is a large file (8mb) so be patient while it downloads

Based on the "water circuit" analogy shown in class today, draw both the water circuit and electric circuit and answer these questions:

1. What would be different in the water circuit if the potential changed?
2. How would you measure the water’s current? Where would you place your measuring device?

Electrostatics Review

Remember that your test is Monday.

Electrostatics HW:

YOSEMITE STUDENTS only

Watch these videos: http://dsc.discovery.com/videos/raging-planet-lightning/

Ch 14
39 40 42 43 44 46 50 51 52 55 56 59 75 76 78-81 84 87

Ch 15
33 34 36 373 8343 47 52 61 68


Selected Answers:

Ch 14

39.
40. work: two objects collide, you push on a block, gravity pulls an object towards the ground; heat: an engine, a refrigerator, a stove; waves: sound, light
59. They are refracted when the speed changes. They change direction. The frequency does not change but the speed and wavelength does.
76. 4 m/s
78. 1.9 m/s; 2.1m
79. 1500 m/s; 1x10^-6s; 1x10^-6s
80. 550 Hz; 280 waves; 160m
81. 1350m
82.



Ch 15

33. pitch- frequency, loudness- amplitude / intensity
36. frequency of the note is the same as the natural resonance frequency of the crystal, causing its molecules to resonate and increase the amplitude of vibration until the vibrations are so large the glass breaks
37. while marching in step, a certain frequency is established that could resonate the bridge into destructive oscillation
52. 1.7km (or 1650m)
61. this question asked for pressure, which is not necessary to know for our class. You should know intensity: a. 100 times greater b. 10000 times greater
68. don't worry so much about this problem. You will have the source and observer moving both away or both towards each other. Use the problems on your review sheet for doppler effect. In case you are curios, the answer is: 349 Hz (using 330m/s for the speed of sound)

Reminder your test is on Thu 2/3
This review sheet is not due.
Also helpful would be reviewing your homework as well as the multiple choice questions at the end of ch 14-15

Slinky Lab