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Pressure and Boyle's Law

  1. Nov 28, 2003 #1
    Hello guys, I got some problems again. Will you be able to help me?

    What is the difference between the absolute pressure and gauge presure?

    Why is the absolute pressure plotted vs the length of the column of the trapped air instead of the volume of trapped air in the J-Tube?
  2. jcsd
  3. Nov 28, 2003 #2

    Doc Al

    User Avatar

    Staff: Mentor

    absolute pressure = gauge pressure + atmospheric pressure

    The length of the column is proportional to its volume.
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