n orifice for its outlet. When the water surface in the tank is 5m above the orifice, the surface can be lowered 4m in 20 minutes, the pressure on the surface being atmospheric. What uniform air pressure must be applied to the surface if the same volume of water is to be disch

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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.