A rectangular trough, 1.6 m long, 0.60 m wide, and 0.35 m deep, is completely full of water. One end of the trough has a small drain plug ri

Question

A rectangular trough, 1.6 m long, 0.60 m wide, and 0.35 m deep, is completely full of water. One end of the trough has a small drain plug right at the bottom edge.
When you pull the plug, at what speed does water emerge from the hole?

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Khoii Minh 5 years 2021-08-06T11:59:53+00:00 1 Answers 45 views 0

Answers ( )

  1. trungdung22
    0
    2021-08-06T12:00:57+00:00
    Reply

    Answer:

    v = 2.61 m/s

    Explanation:

    Given that,

    Length of a rectangular trough, l = 1.6 m

    Breadth of a rectangular trough, b = 0.6 m

    Depth of a rectangular trough, h = 0.35 m

    We need to find the speed with which water emerge from the hole. It is a concept of efflux. The velocity of efflux is given by :

    v=\sqrt{2gh}\\\\v=\sqrt{2\times 9.8\times 0.35}\\\\v=2.61\ m/s

    So, water will emerge from the hole with a speed of 2.61 m/s.

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