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.
![Problem 10.22
4 of 6
Constants
An open-tube mercury manometer is used to
measure the pressure in an oxygen tank. The
atmospheric pressure is 1030 mbar .
1 bar = 10° N/m². The density of mercury is
13.6 x 10° kg/m³.
Part A
Determine the absolute pressure (in Pa) in the tank if the height of the mercury in the open tube is 19.5 cm higher than
the mercury in the tube connected to the tank.
Express your answer using three significant figures.
P =
Ра
Submit
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Part B
Determine the absolute pressure (in Pa) in the tank if the height of the mercury in the open tube is 4.6 cm lower than the
mercury in the tube connected to the tank.
Express your answer using two significant figures.
P2 =
Ра
Submit
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