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Homework Help: Gas process

  1. May 11, 2005 #1
    A monatomic ideal gas has pressure p_1 and temperature T_1. It is contained in a cylinder of volume V_1 with a movable piston, so that it can do work on the outside world.

    Consider the following three-step transformation of the gas:

    1. The gas is heated at constant volume until the pressure reaches A p_1 (where A >1).
    2. The gas is then expanded at constant temperature until the pressure returns to p_1.
    3. The gas is then cooled at constant pressure until the volume has returned to V_1.

    It may be helpful to sketch this process on the pV plane.

    How much work W_2 is done by the gas during step 2?
    Express the work done in terms of p_1, V_1, and A.

    I know I have to find the integral, but I can't work out how to find pressure as a function of volume.

    Please help.

    Thank you
  2. jcsd
  3. May 11, 2005 #2
    Solve the ideal gas law :)
  4. May 11, 2005 #3
    Thanks. Found the answer.
  5. May 22, 2005 #4
    Happy Birthday.
  6. May 22, 2005 #5


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    Happy sweet 18-th !! :smile:

  7. May 23, 2005 #6
    Thanks guys :smile:
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