# Gas station without pumps

## 2011 December 2

### Physics homework (Chapter 4)

Filed under: home school — gasstationwithoutpumps @ 18:21
Tags: , , , , ,

Physics homework for

• (re)read Chapter 4.
• Work problems
• 4.P.44 Also, look up copper’s density, atomic weight, and Young’s modulus on the web and add copper to the list. This should repeat the computations on p. 163.
• 4.P.46
• 4.P.47 We’ll do this measurement of Young’s modulus as a lab together.
• 4.p.51 (Compare to the computation in 4.P.44)
• 4.P.55
• 4.P.78
• 4.P.81
• 4.P.82
• 4.P.85
• 4.P.88 (See 4.P.86 for needed numbers)
• Do computational problems:
• 4.P.89
• 4.P.90, but instead of interatomic springs, let’s use the mass and stiffness of turns of a slinky (which we will have to measure).

I have several labs I want to do with Chapter 4, now that we are finally into the meaty material:

• Measurement of Young’s modulus using a wire.
• Compression waves in a slinky.  We want to measure stiffness and mass as well as the speed of compression waves.  That way we can compare our simulation to real measurements.
• Speed of sound in a metal rod (using an Arduino to do the timing).

Since this looks like three or four weeks worth of labs, the homework assignment should be spread out over a similar time period.  Do 4 problems a week, starting with ones that don’t depend on lab measurements.

## 2 Comments »

1. […] the Physics homework (Chapter 4) post, I mentioned one lab I wanted to do: Compression waves in a Slinky.  We want to measure […]

Pingback by Slinky lab « Gas station without pumps — 2011 December 4 @ 20:54

2. […] Physics homework (Chapter 4) I proposed 3 labs to do with Chapter 4 of Matter and Interactions.  Last week we did the Slinky […]

Pingback by Young’s modulus lab in physics « Gas station without pumps — 2011 December 16 @ 16:36

This site uses Akismet to reduce spam. Learn how your comment data is processed.