Question

ACTIVITY 11 Take a hollow aluminium pipe partly fitted at one end on a wooden cylinder. Wrap a piece of paper on the composite rod at its middle . Heat the composite rod over the flame of a burner near the middle. You will notice that the paper chars only where it covers the wooden cylinder and remains unburned where it covers the aluminium pipe. This shows that aluminium conducts heat while the wood does not. Thus, we can say that aluminium is a good conductor of heat and wood is a bad conductor of heat.
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Answer 1

Answer:

derive an expression for kinetic energy of rotating body

Answer 2

Answer:

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