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प्रश्न
Why do sea divers need special protective suit?
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उत्तर
The sea divers need special protective suit to wear because in deep sea, the total pressure exerted on the diver's body is much more than his blood pressure. To withstand it, he/she needs to wear a special protective suit.
संबंधित प्रश्न
Name the force which makes heavy objects appear light when immersed in a liquid.
A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.
Define the term relative density of a substance.
Explain the meaning of the statement
‘Relative density of aluminium is 2.7’.
The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.
Ans the following:
Will a piece of iron float or sink in water?
How is the upthrust related to the volume of the body submerged in a liquid?
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).
A block of wood is floating on water with its dimensions 50 cm x 50 cm x 50 cm inside water. Calculate the buoyant force acting on the block. Take g = 9.8 N kg-1.
The point at which the force of buoyancy is supposed to act is known as ______.
Complete the analogy.
Downward force : Weight :: Upward force offered by liquid : _____.
