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2. A bicyclist when peddling on a flat road expends power of 80 Watts. How many calories of energy are expended in 5 minutes and what is this equivalent in food calories? What is its equivalent in joules?
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Answer #1

Solution:

From the given inforomation,

P = 80 watt

We know that ,

E = Pt = 80* 5* 60

= 24000 J

= 5.74 Cal.

The equaivalent food in calories is 5.74 cal.

And its equivalent Joules i , 24000J.

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