Fluids and Conservation Laws (Continuity, Bernoulli)

AP Physics 1· difficulty 2/5

In the narrow section of the pipe above, compared to the wide section (both horizontal), the fluid's pressure is

  • A

    Greater

  • B

    Zero

  • C

    The same

  • D

    Smaller

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Explanation

Bernoulli's equation along a horizontal streamline: P+12ρv2=constP + \tfrac{1}{2}\rho v^2 = \text{const}. Larger vv means smaller PP.

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