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-   -   Fluids (https://www.askmehelpdesk.com/showthread.php?t=471921)

  • May 20, 2010, 03:40 AM
    rachellemamauag
    Fluids
    While mercury is the most common liquid used in a barometer, it is possible to use other liquids, such as water. To see why water barometers are inconvenient, calculate the length of the water column in a water barometer at atmospheric pressure. (with diagram) :confused:
  • May 20, 2010, 03:45 AM
    Curlyben
    Thank you for taking the time to copy your homework to AMHD.
    Please refer to this announcement: https://www.askmehelpdesk.com/financ...-b-u-font.html
  • May 20, 2010, 07:24 AM
    Unknown008

    Well, use the formula for the pressure in a liquid.

    The pressure at the same depth are equal.

    At the surface of the mercury in the 'dish', the pressure is 1 atm.

    Just below the mercury column, at the same level as the outside surface, you'll therefore have 1 atm, or 101 300 Pa (approx.)

    Use the formula , you get:





    That is the height of mercury for one atmosphere, with the density of mercury being 13534 kg/m^3.

    Now, take water, with density 1000 kg/m^3. I'm sure you can find the height of water required :)

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