A tank filled with water (density = 1000 kg/m3) and oil (density = 900 kg/m3). The height of water is 1.0m and of the oil is 4.0m. Find the velocity of efflux through a hole at the bottom of the tank.
9.5 m/s
4.6 m/s
6 m/s
4 m/s
Height of water which exerts the same pressure on the interface as whatever oil exerts:
or
Effective height of water over the hole:
H = 1 + 3.6 = 4.6 m
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