Two pipes are smoothly connected together without leaks. One has a diameter of 3 cm, and the other has a diameter of 5 cm. Water flows through the pipes. In which pipe is the volume flow rate the greatest? In the pipe that the water flows through first (the “upstream” pipe) In the 3-cm pipe In the 5-cm pipe In neither; the flow rate is the same in both pipes.

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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.