A barometer consists of a closed tube manometer that is filled with mercury as shown in the diagram below. The barometer is used to measure the air pressure in Denver, Colorado. If the mercury rises to a vertical height of 651 mm in the barometer, what is the atmospheric pressure at that point in Denver, Colorado? Assume that the density of mercury is 13,600 kg/m³. Vacuum Po h а. 79 kPa b. 71 kPa C. 87 kPa
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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