1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Number of collisions/sec for a gas atom

  1. May 16, 2012 #1
    1. The problem statement, all variables and given/known data
    Consider a single ideal gas atom bouncing between two opposite faces of a cubic container, with sides of length l.
    Using m for the mass of the gas atom and Vx (V sub x) for the velocity component, give an expression for the number of collisions per second the atom makes with one of the faces.

    2. Relevant equations

    3. The attempt at a solution

    Number of collisions per second with one of the faces = (1/2)(l^2)(Vx)n

    Where n is the number of gas atoms per unit volume.

    Should n be in the solution?
    If the number of atoms per unit volume, n, increases then according to the solution so do the number of collisions with one of the faces. Would that be correct? The higher the number of gas atoms per unit volume, the more collisions there are per second with one of the faces?

    Thank you
  2. jcsd
  3. May 16, 2012 #2


    User Avatar
    Homework Helper

    Read the problem text carefully.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook