In one observation, the column in a mercury barometer has a measured height h of 740.35 mm.The temperature is 5.0 C, at which temperature the density of mercury r is 1.3608 * 10^4 kg/m3.The free-fall acceleration g at the site of the barom- eter is 9.7835 m/s2.What is the atmospheric pressure at that site in pascals and in torr (which is the common unit for barometer readings)?
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.
In one observation, the column in a mercury barometer has a measured height h of 740.35 mm.The temperature
is 5.0 C, at which temperature the density of mercury r is
1.3608 * 10^4 kg/m3.The free-fall acceleration g at the site of the barom- eter is 9.7835 m/s2.What is the atmospheric pressure at that site in pascals
and in torr (which is the common unit for barometer readings)?
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