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A huge tank of Persian crude oil with a density of 915 kg/m3 is vertically stationed on a platform that is 15 m above the ground. The oil level is 5 m above the base of the tank. A small hole 4 mm in diameter has formed in the base of the tank. Both the hole and the top of the tank are open to the air.
A. How many cubic meters of oil per second is this tank losing? (hint: the speed of the flow at the top of the tank is pretty small and negligible)
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