When the hamster is running in a wheel, the temperature of the air in the calori

Question

When the hamster is running in a wheel, the temperature of the air in the calorimeter rises 1.60 per hour. How much heat does the running hamster generate in an hour? Assume that all this heat goes into the air in the calorimeter. You can ignore the heat that goes into the walls of the box and into the thermometer, and assume that no heat is lost to the surroundings.When the hamster is running in a wheel, the temperature of the air in the calorimeter rises 1.60 per hour. How much heat does the running hamster generate in an hour? Assume that all this heat goes into the air in the calorimeter. You can ignore the heat that goes into the walls of the box and into the thermometer, and assume that no heat is lost to the surroundings.Assuming that the hamster converts seed into heat with an efficiency of 10% and that hamster seed has a food energy value of 24 , how many grams of seed must the hamster eat per hour to supply this energy?

Explanation / Answer

a) Thermal energy (Q) is calculated as mass*specific heat * temp rise. Taking the figures for one hour, and using mass = volume*density Q = 1.20*0.05*1020*1.6 = 97.92J b) mass per hour = 97.92/24 = 4.08g/hr

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