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!

Need help with stat thermo qtn

  1. Feb 5, 2009 #1
    1. The problem statement, all variables and given/known data

    Classical Ideal Gas in 3 Dimensions
    In a classical ideal gas, we treat molecules as non-interacting point particles moving in the x,y, and z directions. These particles' velocities (in each respective direction) are statistically independent:

    p(Vx,Vy,Vz)=C*exp-(Vx^2+Vy^2+Vz^2)

    The energy is E=1/2*m*|v|^2

    (a) Find P(E), the overall probability that these gas particles will have a KE \<E.
    (b) By noting that dP=p(E)dE, derive the probability density p(E).

    2. Relevant equations
    No clue

    3. The attempt at a solution
    Don't even know how to start...any tips would be much appreciated
     
  2. jcsd
  3. Feb 5, 2009 #2

    Ygggdrasil

    User Avatar
    Science Advisor

    Can you re-write the expression for p(Vx,Vy,Vz) so that the probability depends on E rather than Vx, Vy, and Vz?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Need help with stat thermo qtn
  1. Help with Stat Mech HW (Replies: 1)

  2. Thermo homework help (Replies: 2)

  3. Need help. With Thermo (Replies: 2)

Loading...