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Homework Help: Thermal equilibrium of system

  1. Apr 26, 2010 #1
    1. The problem statement, all variables and given/known data

    I need to calculate dS/dU for a solid when then system is in thermal equilibrium.

    2. Relevant equations

    I rearranged the equation to find that Ds/Du=kb(1/omega)(dOMEGA/dU)

    3. The attempt at a solution
    I am not sure how to go about this because I am not sure when the system is in thermal equilibrium and how to find (dS/dU) for the equation. any help would be greatly appreciated.
  2. jcsd
  3. Apr 27, 2010 #2
    Any takers? any advice is appreicated!
  4. Apr 27, 2010 #3


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    Science Advisor
    Homework Helper
    Gold Member

    Hi sarahaha288, you'll probably get more responses if you add some context to the problem and proofread your post carefully in LaTeX. I've done a lot of entropy calculations, but I have no idea what "Na=100 Nb=10" is referring to, for example. If you give the complete problem statement and write your equations cleanly as


    (click on the equation to see the markup language) then I'm sure you'll get some help very soon.
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