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प्रश्न
Why does a piece of ice float on water?
उत्तर
FLOATATION OF ICE ON WATER: Density of 0.9 g Cm-3 is less than the density of water 1 g Cm-3. Hence, ice floats on water.
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संबंधित प्रश्न
Name the force which makes heavy objects appear light when immersed in a liquid.
A body experiences the same buoyant force when it floats or sinks in water.
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.
Answer the following:
Will a piece of iron float or sink in mercury?
How does the pressure exerted by thrust depend on the area of surface on which it acts? Explain with a suitable example.
A block of iron of mass 7.5 kg and of dimensions 12 cm × 8 cm × 10 cm is kept on a table top on its base of side 12 cm × 8 cm.
Calculate:
- Thrust and
- Pressure exerted on the table top
Take 1 kgf = 10 N.
A simple U tube contains mercury to the same level in both of its arms. If water is poured to a height of 13.6 cm in one arm, how much will be the rise in mercury level in the other arm?
Given : density of mercury = 13.6 x 103 kg m-3 and density of water = 103 kg m-3.
In what direction and at what point does the buoyant force on a body due to a liquid act?
What is meant by the term buoyancy?
A piece of wood if left under water comes to the surface. Explain the reason.
Is thrust a scalar or vector quantity?
