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Homework Help: Pressure in a column of water

  1. Apr 5, 2007 #1
    1. The problem statement, all variables and given/known data
    I feel like I'm doing something seriously wrong here.:uhh:

    How tall must a column of water be to generate a pressure of 100mmHg?

    2. Relevant equations
    P = pgh, I think, is the only necessary equation.

    3. The attempt at a solution

    So..... 100mmHg = 1 kg/m3 * 9.81 m/s2 * 1mmHg/133.322Pa * h

    h = 1.36 km?

    Seems a bit much, don't ya think?
  2. jcsd
  3. Apr 5, 2007 #2


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    Staff Emeritus
    Science Advisor
    Gold Member

    :surprised What's the density of water again? :wink:
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