A Guide to Physics Problems. Part 2. Thermodynamics, Statistical Physics, and Quantum Mechanics

200 SOLUTIONS

4.82 Paramagnetism at High Temperature (Boston)

a) The specific heat c of a system that has N energy states is given by

Using we may rewrite

where we have used In Note that, in general, the param-

eter is not small (since it is proportional to the number of particles),

but, subsequently, we obtain another parameter

b) For a classical paramagnetic solid:

so