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.How much mechanical energy is required to increase the temperature of 200 g of water (enough for 1 cup of coffee) from 22°C to 96°C? (1 cal = 4.186 J,the specific heat of water is 4 186 J/kg⋅°C)
A) 62,000 J
B) 31,000 J
C) 16,000 J
D) 1,000 J
E) 15 J
Correct Answer:

Verified
Correct Answer:
Verified
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