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March 25, 2017

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A horizontal pipe has a cross sectional area of 40.0 cm^2 at the wider portions and 10.0 cm^2 at the constriction. Water is flowing in the pipe, and the discharge from the pipe is 6.00*10^-3 m^3/s(6.00 L/s). Find (a) the flow speeds at the wide and the narrow portions; (b) the pressure difference between those portions; (c) the difference in height between the mercury columns and the U-shaped tube.

  • physics - ,

    a) use the equation of continuity

    b) Use bernoullis equation, I can check your work.

    c) Change pressure in b to mmHg.

  • physics - ,

    Marqious, you err. Water is incompressible, so the flow speed has to change with area.

  • physics - ,

    Pls ignore, Marquious has been banned because of spamming.

  • physics - ,

    ok for part a I got v at the wide portion as .015 m/s and at the narrow portion .06 m/s but I have no idea if that is right

  • physics - ,

    it should be 1.5 m/s and 6.0 m/s

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