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Homework Help: Help with thermodynamics question please

  1. Apr 27, 2006 #1
    this is the question:

    i know how to find the average energy:

    average energy= (3/2)K(b)T
    = 6.21 x 10^-21

    i also know how to find the kinetic energy of an oxygen molecule:

    K= 1/2 m v(rms)^2

    the only problem is that i dont know how to get the distance. can someone please help
  2. jcsd
  3. Apr 27, 2006 #2
    Use conservation of total energy and keep in mind that gravity is the force that is responsible for making the molecule fall down.

  4. Apr 27, 2006 #3

    so then:

    6.21 x 10^-21 = mgh

    is that the right setup?
    Last edited: Apr 27, 2006
  5. Apr 27, 2006 #4

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