Physics 115A   Spring 2001

		Statistical Physics 		due 12:30 pm Thursday, May 24

PROBLEM SET 7

Reading: Chapter 7 (sections 7.1-7.10) in Reif.

1.

Reif 6.2

2.

Reif 6.3

3.

Reif 7.4

4.

Reif 7.6

5.

Reif 7.7

6.

Reif 7.14

7.

In class (see notes for lecture 10) we considered a system of Nnoninteracting spins at temperature T in an external magnetic field H pointing along the z axis. These spins have total angular momentum J=1/2 and g=2. What is the entropy S of the system as a function of T and H?