equipartition theorem

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Karina Koo 2H
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Joined: Fri Sep 28, 2018 12:24 am

equipartition theorem

Postby Karina Koo 2H » Mon Feb 11, 2019 2:21 am

Do we need to know the equipartition theorem from the textbook in chapter 4B.3? if so, can someone explain this to me? I don't understand it. Thanks!

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Joined: Fri Sep 28, 2018 12:15 am

Re: equipartition theorem

Postby aisteles1G » Mon Feb 11, 2019 7:01 am

I don't think we have to know it since it was not needed for any of the HW problems, but the way I understand it is that the theorem states that "molecules in thermal equilibrium have the same average energy associated with each independent degree of freedom of their motion" and for a monoatomic gas there are 3 translational degrees of freedom (x,y,z axis), for polyatomic gases you would have to consider rotational as well though. So this theorem gives the avg KE for each molecule. This link was pretty helpful! http://hyperphysics.phy-astr.gsu.edu/hb ... eqpar.html

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