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Mar17-12, 02:32 PM
P: 789
Quote Quote by aaaa202 View Post
hmm okay, but aren't you assuming that energy and temperature are proportional?
Yes. For an ideal monatomic gas, U= 3 N (kT/2) where U= total energy, N=total particles. For d degrees of freedom, U=d N (kT/2).

For the general situation, the "degrees of freedom" become a function of temperature, and then it may not be proportional.