Problem 8.02***. Water streams from a pipe with an attached nozzle. The pipe has an inner diameter of 5.08 cm. The diameter of the nozzle is 0.500 centimeter. The pipe 1 m off the ground and the stream of water hits the ground 4 m away from the ground. (a) Using projectile motion, calculate the speed of water as it leaves the nozzle. [8.85 m/s] (b) Calculate the flow rate in liters per second. [0.174 L/s] (c) Calculate the absolute pressure inside the pipe (Hint: The nozzle is exposed to the atmosphere and therefore at atmospheric pressure) [1.405 ×105 Pa]
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
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