(a) A typical student listeningattentively to a physics lecture has a heat output of 100 W. Howmuch heat energy does a class of 140 physics students release into alecture hall over the course of a 50 min lecture? (b) Assume that allthe heat energy in part (a) is transferred to the 3200 m3 of air in theroom. The air has specific heat 1020 J/kg. K and density 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 the50 min lecture? (c) If the class is taking an exam, the heat output perstudent rises to 280 W. What is the temperature rise during 50 minin this case?

(a) A typical student listeningattentively to a physics lecture has a heat output of 100 W. Howmuch heat energy does a class of 140 physics students release into alecture hall over the course of a 50 min lecture? (b) Assume that allthe heat energy in part (a) is transferred to the 3200 m3 of air in theroom. The air has specific heat 1020 J/kg. K and density 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 the50 min lecture? (c) If the class is taking an exam, the heat output perstudent rises to 280 W. What is the temperature rise during 50 minin this case?