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U-tube manomer problem

  1. Oct 21, 2014 #1
    1. The problem statement, all variables and given/known data
    A U-shaped tube is partially filled with water. One end of the tube is then capped
    so that the air in that end is trapped (initially at atmospheric pressure). The tube has a bore
    diameter of 10mm. The initial height of the entrapped air gap is 200mm.
    A gauge pressure of 1500 mmHg is then applied to the other end of the tube.

    a) Calculate the difference in the height of the water column on each side of the tube after
    the pressure is applied.
    b) Explain how the function of this system is different in principle to the function of a
    closed ended manometer used to measure absolute pressure.
    c) Make a plot of applied gauge pressure versus tube fluid height difference.

    Untitled.png
     
  2. jcsd
  3. Oct 21, 2014 #2

    NTW

    User Avatar

    I would like to try to solve the problem, but you're supposed to try first...
     
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