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physics

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Water flows through a horizontal tube of diameter 2.9cm that is joined to a second horizontal tube of diameter 1.5 cm. The pressure difference between the tubes is 7.2 kPa.

A)Find the speed of flow in the first tube.

  • physics - ,

    Data
    d1=2.9cm
    d2=1.5cm
    dP=7.2kPa
    required, V1=?
    from,
    A1V1=A2V2
    Hence
    A1/A2=V2/V1
    A1=V2
    A2=V1
    hence
    A2=((3.14*1.5*1.5)/(4))
    A2=1.77cm2=V1
    V1=1.77cm/s

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