Question: A vertical water jet flows out of a round hole. One of the horizontal sections of the jet has the diameter d = 2.0 mm

A vertical water jet flows out of a round hole. One of the horizontal sections of the jet has the diameter d = 2.0 mm while the other section located l = 20 mm lower has the diameter which is n = 1.5 times less. Find the volume of the water flowing from the hole each second.

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