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 of water (enough for 1 cup of coffee) is to be heated in 10 min from 30°C to 90°C? (1 cal = 4.186 J, the specific heat of water is 4 186 J/kg • °C)
a. 9400 W
c. 160 W
b. 590 W
d. 130 W
D
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What is the speed of the object when it is located at ? A) 2.13 m/s B) 3.00 m/s C) 4.68 m/s D) 3.67 m/s
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Indicate whether the statement is true or false
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