beer has a depth of 19.2 m. The air pressure gauge you are holding, as you stand next to your brew, reads out 741 mmHg. A bubble forms, due to fermentation, at the bottom of the vat. The bubble rises to che surface, at which point its volume is 0.098 cm³. a) What is the absolute pressure at the surface of the beer (in Pa)? b) What is the absolute pressure at the bottom of vat (in Pa)? c) What was the volume of the bubble when it was at the bottom of the vat (Give your answer in cm3) Assume the gas inside the bubble is ideal, the temperature of the beer is uniform he contribution from the surface tension is negligible, and that beer has the sam ensity as water]
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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