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Homework Help: Average speed of effusing molecules

  1. Oct 25, 2009 #1
    1. The problem statement, all variables and given/known data
    http://img406.imageshack.us/img406/6418/problemo.jpg [Broken]


    2. Relevant equations
    <V>=( Integral-from-0-to-inf(V*f(V)*dV) ) / ( Integral-from-0-to-inf (f(V)*dV) )

    (second integral is for normalisation)


    3. The attempt at a solution
    http://img32.imageshack.us/img32/529/thermalphysics.jpg [Broken]
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Oct 25, 2009 #2
    I just realised, that average speed is not the most probable speed. I think I need to differentiate the speed distribution functions and find those two speeds.
     
  4. Oct 25, 2009 #3
    Yea, that worked.
     
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