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A hose directs a horizontal jet of water...

A hose directs a horizontal jet of water,moving with a velocity of `20m/s` on to a vertical wall.The cross sectional area of the jet is `5times10^(-4)m^(2)`. If the force exerted by water jet on the wall is `n times10^(2)N` assuming the water is brought to rest there,find the value of `n` . (take density of water =1000kg/`m^(3))`

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