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3. Gravitation
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Q34 of 176 Page 124

Explain why, a piece of glass sinks in water but it floats in mercury.

This happens because the density of mercury is higher than that of glass, while the density of water is lower than that of water.


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32

Explain why, big boulders can be moved easily by flood.

33

An iron nail sinks in water but it floats in mercury. Why?

35

Steel sinks in water but a steel boat floats. Why?

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Explain why, school bags are provided with wide straps to carry them.

Questions · 176
3. Gravitation
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