The surface of the water in a storage tank is 30 m above a water faucet in the kitchen of a house, Fig. Calculate the difference in water pressure between the faucet and the surface of the water in the tank. The density of the water is 1x10³ k9. Figure 18. Pressure at a Faucet Ah = 30 m 田田田| Approach - Water is practically incompressible, so p is constant even for a Ah = 30 when used in equation AP = pg Ah. Only Ah matters; we can ignore the "route" of the pipe and its bends. Note: The height h is sometimes called the pressure head. In the figure, the head of water is 30 m at the faucet. The very different diameters of the tank and faucet don't affect the result – only pressure does.
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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