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Give reasons for the following :A cork p...

Give reasons for the following :A cork piece floats but an iron piece sinks in water.

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MBD -HARYANA BOARD-GRAVITATION-Example
  1. Steel sinks in water but a steel boat floats .why ?

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  2. Why does a sharp knife cut object more effectively than a blunt knife ...

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  3. Give reasons for the following :A cork piece floats but an iron piece ...

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  4. Explain the following : Swimmers are provided with an inflated rubber ...

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  5. Why is it easier to swim in sea water than in the river water ?

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  6. Why is the pressure on the ground more when a man is walking than when...

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  7. Why is a bucket of water lighter when in water than in air?

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  8. If a fresh egg is put into a beaker filled with water, it sinks On dis...

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  9. The radius of the moon is 1.7 xx 10^(6) m and its mass is 7.35 xx 10^(...

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  10. Find the change in weight percentage of a body when it is taken from e...

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  11. At what distance from the centre of the earth, the value of accelerati...

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  12. A block of wood is kept on a table top The mass of the wooden block is...

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  13. A block of wood is kept on a table top The mass of the wooden block is...

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  14. A solid body floating in water has 1//5th of its volume above the surf...

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  15. Explain why Moon exerts a lesser gravitational force on objects as com...

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  16. The unit of g/G is

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  17. What is the SI unit of weight ?

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  18. The earth's gravitaional force causes an acceleration of 5m//s^(2) in ...

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  19. With a specific initial velocity, we can jump higher on the moon than ...

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  20. The value of g on the surface of the moon

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