PHYSICS C1801
Homework #2
Due 26-Sep-95

1.

KK 2-4

2.

KK 2-7

3.

KK 2-13

4.

KK 2-17

5.

KK 2-19,20

6.

KK 2-24

7.

KK 2-27

8.

KK 2-29

9.

KK 2-33

10.

KK 2-37 (you may find it helpful to first look at Problem 2-9)

11.

A box of volume V contains N particles of mass m, moving in various random directions with speed v. From dimensional analysis, find how the pressure ( Force per unit area) depends on N, V, m, and v. Can you draw any conclusions concerning the nature of absolute temperature? (This last question assumes you have previously seen some empirical relation for, say, the product of pressure and volume.)

12.

On this assignment (for the paper version, not the Web-posting) is an excerpt from a New York Times article (15-Feb-95). Suppose I give you a little additional information, such as the take-off speed of a jet is about mph. Estimate the deceleration of the plane after the crew realized their error. To simplify the problem, you may assume that in the last second between ``should have braked'' and ``did start braking'' that the plane was moving with the same (take-off) speed , but you should state how large of an error this might lead to.

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