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Consider a classroom that is roughly 5mx...

Consider a classroom that is roughly `5mxx10mxx3m`. Initially `T=27^(@)`C and p=1 atm. There are 50 people in a insulated class losing energy to the room at the average rate of 150 Watt per person. How long can they remain in class if the body temperature is `42^(@)` C and person feels uncomfortable above this temperature. Heat capacity of air=`(7//2)R`

A

4.34 minutes

B

5.91 minutes

C

6.86 minutes

D

7.79 minutes

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The correct Answer is:
B
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