4. Drop a paper, a piece of thermopol, and a piece of plastic from a height of 10-
15 feet. Note the time for each object to hit the ground. Why does the paper take
more time than thermopol and thermopol more than the plastic piece? Make the
paper to fell down in such a way that it should hit the ground before all of them. How
did it happen? Explain.
(5 marks)
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Explanation:
Take a bowl of ice, put it out in direct sunshine and note the melting time of
ice. Now put the same water on a stove and note the boiling time of water. After
boiling of water do not turn off the stove and note the time till the whole water
disappears. What happened with the water? Where is it gone? Also draw a diagram
of the process.
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