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प्रश्न
State whether pressure is a scalar or vector?
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उत्तर
Pressure is a scalar quantity.
संबंधित प्रश्न
What do you mean by buoyancy?
What causes buoyant force (or upthrust) on a boat ?
Describe a simple experiment to demonstrate that a liquid enclosed in a vessel exerts pressure in all directions.
Deduce an expression for the pressure at depth inside a liquid.
State the laws of liquid pressure.
A body weighs 450 gf in air and 310 gf when completely immersed in water. Find
(i) The volume of the body,
(ii) The loss in weight of the body, and
(iii) The upthrust on the body.
State the assumption made in part (i).
Complete the following sentence.
Mass = .................... × density
What is the centre of buoyancy? State its position for a floating body with respect to the centre of gravity of the body.
A body will sink if the weight of the body is greater than the buoyant force.
Salt water provides less buoyant force than freshwater.
