PHY 4523 Spring 2000 – Homework 7
Due by 5:00 p.m. on Wednesday, April 12.
Answer all questions. To receive full credit, you should explain your reasoning and show all
working. Please write neatly and remember to include your name.
1. Pressure exerted by a Fermi gas: Reif Problem 9.18.
2. Entropy — electrons vs photons: Reif Problem 9.19.
Hint: Equation (4.4.9) may be of use in answering this question.
3. Quantum paramagnetism: Reif Problem 9.21.
Hint: In addition to the arguments mentioned in the problem, which appear on page
392 of Reif, you may find it helpful to review Reif Section 7.8.