In Figure 8 three pipes discharge water at 20 ° C stationary to a large outlet pipe.  The velocity V2 = 5 m / s and the outlet flow Q, = 120 m / h.  Calculate (a) V1.  (b) V3 and (c) V4 if it is known that, by increasing Q3 by 20 percent, Q̟4 increases by 10 percent.

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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.