1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Help with thermodynamics question please