Multiple Choice
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 C to 95 C? (1 cal = 4.186 J,the specific heat of water is 4 186 J/kg* C)
A) 9 400 W
B) 590 W
C) 160 W
D) 31 W
Correct Answer:

Verified
Correct Answer:
Verified
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