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An Inventor Develops a Stationary Cycling Device by Which an Individual,while

Question 22

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An inventor develops a stationary cycling device by which an individual,while pedaling,can convert all of the energy expended into heat for warming water.What minimum power must be generated if 300 g water (enough for 1 cup of coffee) is to be heated in 10 min from 20 °\degree C to 95 °\degree C? (1 cal = 4.186 J,the specific heat of water is 4 186 J/kg* °\degree C)


A) 9 400 W
B) 590 W
C) 160 W
D) 31 W

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