Consider the piping system shown in the figure.  The speed of water flowing through the 4-in diameter segment of the piping system is 3 ft/s.  What is the volumetric flow rate of water in the piping system?  Express the volumetric flow rate in ft3/s, gpm, and L/s.  For the case of steady flow of water through the piping system, what is the speed of water in the 3-in diameter segment?

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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.