a) A typical student listening attentively to a physics lecture has a heat output of 108 W. How much heat energy does a class of 95 physics students release into a lecture hall over the course of a 50 min lecture? Express your answer in joules.
a) A typical student listening attentively to a physics lecture has a heat output of 108 W. How much heat energy does a class of 95 physics students release into a lecture hall over the course of a 50 min lecture? Express your answer in joules.
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Transcribed Image Text:a) A typical student listening
attentively to a physics lecture has
a heat output of 108 W. How
much heat energy does a class of
95 physics students release into a
lecture hall over the course of a
50 min lecture? Express your
answer in joules.
b) Assume that all the heat energy
in part A is transferred to the 3204
m3 of air in the room. The air has
a specific heat of 1020 J/(kg.K)
and a density of 1.20 kg/m3. 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
min lecture? Express your answer
in Celsius degrees.
c) If the class is taking an exam,
the heat output per student rises
to 285 W. What is the temperature
rise during 50 min in this case?
Express your answer in Celsius
degrees.
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