Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Why ?

  1. Nov 4, 2005 #1
    i know that the molecules in the "freedom" form that have charges equal 0. but i wonder why the molecules still moving to create the diffusion and the effusion?
    some one please explain to me. thanks:!!)
     
  2. jcsd
  3. Nov 8, 2005 #2

    Tide

    User Avatar
    Science Advisor
    Homework Helper

    It is unclear exactly what you're asking.
     
  4. Nov 8, 2005 #3

    Galileo

    User Avatar
    Science Advisor
    Homework Helper

    Diffusion and effusion are not results of any particular interaction between the molecules (except collisions). It is a statistical effect resulting from having a gazillion particles. It works just as well with billiard balls.
    I hope it clarifies your question somewhat.
     
  5. Nov 8, 2005 #4

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    Why wouldn't they move? I think you are saying that because they do not have a net charge the molecues would have no force on them. That's not true- there are other forces. But even if a molecule has no force on it, that doesn't mean it is motionless. It would still move (at constant speed in a straight line) until there was a force (such as hitting another molecule).
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Why ?
  1. Why is it useful (Replies: 3)

  2. Why the amplification? (Replies: 5)

  3. Why torque? (Replies: 2)

  4. Why impulse? (Replies: 4)

  5. Why is there friction? (Replies: 3)

Loading...