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If a slice of bread can supply 100 kiloc...

If a slice of bread can supply 100 kilocalorie of heat to a man, how many metres can a man weighting `60kg` climb by using this energy? (Efficiency of working of the human body `=30% J =4.2` joules per calorie and `g=9.8ms^(-2)`)

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The correct Answer is:
`214.3m`
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