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Question

Hydrostatic pressure in water varies significantly over small change in depth whereas the atmospheric pressure does not change unless the difference in altitude is very large?why?


Solution

Pressure is the force exerted by a body of mass over an area. Pressure is the force in al directions that is the weight of the atmosphere above a body creating a force over the upper surface of the body and over all other surfaces of the body. Water is more dense than air, and therefore a given height of water creates more pressure than air of the same height.
since water is more denser than air,small change in depth in water will be only equivalent to larger change in altitude in air.Hence hydrostatic pressure carries significantly over small change in depth when compared to that of air.

Physics

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