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Problems:

1. Reif 7.1
2. Reif 7.2
3. Reif 7.5
4. Reif 7.7
5. Reif 7.14
6. In class (see notes for lecture 10) we considered a system of N noninteracting 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?