Physics
Fluid-Mechanics
Easy
Question
Water of density flows out of a big tank along a tube bent at right angles. Length of the horizontal section of the tube is equal to L. Flow rate of water is Q. Torque due to the reaction of flowing water acting on the tube's walls radiative to point P will be (A is area of cross section of tube).
The correct answer is:
where V is velocity of stream from the tube 
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