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18 June, 01:10

A 1500 kg hippo is completely submerged, standing on the bottom of a lake. What is the approximate value of the upward normal force on the hippo?

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  1. 18 June, 01:26
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    About 428 N

    Step-by-step explanation:

    Weight = 1,500 * 9.8 = 14,700 N

    Density = Mass : Volume

    1,030 = 1,500 : V

    V = 1,500 : 1,030 = 1.46 m^3.

    Buoyant force = Density * g * V

    Buoyant force = 1,000 * 9.8 * (1,500 : 1,030)

    Buoyant force = 9,800 * (1,500 : 1,030) = 14,272 N.

    Net force = 14,700 - [ (9,800 * (1,500 : 1,030) ]
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