PING PONG BALL LAMP OIL RUBBING ALCOHOL SODA CAP VEGETABLE OIL BEADS WATER CHERRY TOMATO DISH SOAP MILK DIE 100% MAPLE SYRUP POPCORN KERNEL CORN SYRUP HONEY BOLT How does the cherry tomato in the above diagram (Density pillar as it's called) stay at rest without a 'ground' underneath? O because this is an instantaneous picture of the tomato while it's falling down O because the liquid displaced by the tomato balances its weight. O because the picture is taken in vacuum
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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