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Fluids and Conservation Laws (Continuity, Bernoulli)

AP Physics 1· difficulty 2/5

A pipe carries 0.04 m3/s0.04~\text{m}^3/\text{s} of water. Through a cross-section of 0.020 m20.020~\text{m}^2, the flow speed is

  • A

    1.0 m/s1.0~\text{m/s}

  • B

    0.5 m/s0.5~\text{m/s}

  • C

    5.0 m/s5.0~\text{m/s}

  • D

    2.0 m/s2.0~\text{m/s}

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Explanation

Q=Av⇒v=0.04/0.020=2.0 m/sQ = A v \Rightarrow v = 0.04/0.020 = 2.0~\text{m/s}.

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