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Unformatted text preview: Homework #1 PHYS 603 Spring 2007 Deadline: Thursday, March 15, 2007, in class Professor Victor Yakovenko Office: 2115 Physics Web page: http://www2.physics.umd.edu/yakovenk/teaching/ Textbook: Gregory H. Wannier, Statistical Physics Dover 1987 reprint of the 1966 edition, ISBN 0-486-65401-X Do not forget to write your name and the homework number! Each problem is worth 6 points. Ch. 1 The First Law of Thermodynamics 1. Problem 1.5, Refrigiration by isothermal demagnetization. Derive an analytical formula for the answer; do not plug the numbers (unless you wish to compare with the answer in the textbook). Use the First Law and the Curie Law in the form: dU = dQ + H dM, M = C T H, (1) where C is the Curie constant (not heat capacity!), and U ( T ) depends only on tem- perature T . 2. Problem 1.6, A formula for C p /C v . Derive this equation for an ideal gas with the equation of state (1.09) PV = RT . The textbook sometimes call it a perfect gas or a perfect fluid....
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This note was uploaded on 09/26/2011 for the course PHYSICS 603 taught by Professor V.yakovenco during the Spring '08 term at Maryland.
- Spring '08