a. A typical student listening attentively to a physics lecture has a heat outpu

Question

a. A typical student listening attentively to a physics lecture has a heat output of 103 W. How much heat energy does a class of 92.0 physics students release into a lecture hall over the course of a 50.0 min lecture? answer: 2.84x10^7 J

b. Assume that all the heat energy in part (a) is transferred to the 3208 m^3 of air in the room. The air has a specific heat capacity of 1020 J/(kg K) and a density of 1.20 kg/m^3. If none of the heat escapes and the air-conditioning system is off, how much will the temperature of the air in the room rise during the 50.0 min lecture? answer: 7.24 degrees Celsius

c. If the class is taking an exam, the heat output per student rises to 282 W. What is the temperature rise during 50.0 min in this case?

i dont understand how to do part c. please help

Explanation / Answer

the rise would be delta T = 7.24*282/103 = 19.822 degrees

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