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Answer to Question #36957 in Mechanics | Relativity for ammy

Question #36957
An open water tank has an orifice 10cm below the surface of water .if there is no loss of energy ,then what is the speed of efflux ???????????????????????????????? (take g=10 m/s square )
Expert's answer
v^2/2 + gz + p/rho = const.

we have the same pressure, as the tank is opened, hence

v^2/2+gh=const.

Hence

v^2/2 = gz

v = sqrt(2gz) = sqrt(2*10*0.1) = sqrt(2) = 1.41 m/s

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