An orifice having an area of 0.0003 m² is located on the vertical side of a tank. The tank has a constant cross sectional area of 0.40 m². It takes 312 seconds to lower the head from 1.20 m to 0.60 m. Using c=0.60, which of the following most nearly gives the head in meter after 240 seconds from an initial head of 1.20m?

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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.