1 A How Much Heat Transfer Is Required To Raise The Temperature Of A 0 5 Kg Aluminum Pot Containing 2 7 Kg Of Wat 1 (85.31 KiB) Viewed 9 times
= 1. (a) How much heat transfer is required to raise the temperature of a 0.5 - kg aluminum pot containing 2.7 kg of water from 30 °C to the boiling point and then boil away 0.75 kg of water? Specific heat of water = 1.00 kcal/kg °C Specific heat of aliminum = 0.215 kcal/kg °C Latent heat of vaporization for water = 539 kcal/kg I kcal = 4186) = Q: V kcal (b) How long does this take if the rate of heat transfer is 500 W? Time, t: Vs
1. Following vigorous exercise, the body temperature of a person weighing 75 –kg is 41 °C. At what rate in watts must the person transfer thermal energy to reduce the body temperature to 37 °C in 30 min, assuming the body continues to produce energy at the rate of 150 W? (1W= 1 joule/sec or 1W=1J/s) The specific heat of the human body is 3500 J/kg °C. P required: vw
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