At the end of the summer, a swimming pool is being drained through a very long, small-diameter hose. The hose is smooth, of inner diameter D = 6.0 cm, and of length L = 65 m. The initial height difference from the pool surface to the outlet of the hose is H = 2.20 m. Calculate the volume flow rate in litres per minute (LPM) at the start of draining.

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Fluid Dynamics

The study of the flow of gases and liquids, usually in and around solid surfaces, is known as fluid dynamics in physics and engineering. Fluid dynamics, for example, can be used to evaluate the movement of air through an airplane wing or the surface of a vehicle. It can also be used in ship design to increase the speed at which ships pass through water.