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Posted by on Sunday, March 22, 2009 at 8:40am.

ab open tube mercury manometer is used to measure the pressure in an oxygen tank. when the atmospheric pressure is 1040 mbar, what is the absolute pressure (in Pa) in the tank if the height of the mercury in the open tube is
a)28 cm higher
b)4.2cm lower, than the mercury in the tube connected to the tank.

  • pressure - , Sunday, March 22, 2009 at 10:16am

    Ptank - Po = (mercury density)*g*(delta H)
    where delta H = (outside column height) - (column height on tank side)

  • pressure - , Monday, March 23, 2009 at 4:06am

    thankyou!

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