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: Thermodynamics of gases

  1. Feb 10, 2004 #1
    need some explaination of these.

    a gas feels cold when it escapes through a small hole of a closed cylinder at high pressure. Explain this phenomenon based on the first law of thermodynamics.
    will the escaping gas above be cold if allowed o excape into a vacuum??
  2. jcsd
  3. Feb 10, 2004 #2


    User Avatar
    Homework Helper

    Probably you will use the ideal gas law as well. Please tell us what you think the first law of thermo is (with definitions/interpretations).
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook