5) Old Faithful Geyser (an underground hot spring in which water intermittently boils, sending a tall column of water and steam into the air) in Yellowstone Park erupts at approximately 1-hour intervals, and the height of the fountain reaches 40 m. a) With what velocity does the water leave the ground? b) What is the gauge pressure in the heated underground chamber just beneath the surface? Assume that the water is stationary just beneath the surface.
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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