what is bouyancy and explain
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Buoyancy or upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus the pressure at the bottom of a column of fluid is greater than at the top of the column.
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Buoyancy is the ability or tendency of an object to float in a fluid, which can be a liquid or a gas. This happens because fluid pressure increases with depth. It says that the buoyant force on a submerged object is equal to the force of gravity on the liquid displaced by the object.
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