A closed and elevated vertical cylindrical tank with diameter 80 cm contains water to a depth of 0.900 m . A worker opens a circular hole with diameter 12 cm in the bottom of the tank. As the water drains from the tank, compressed air above the water in the tank maintains a gauge pressure of 5.00×103Pa at the surface of the water. Ignore any effects of viscosity ( ½w = 1000 kg=m3 ).
a) (12 points) Just after the hole is made, what is the speed of the water as it emerges from the hole?
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