Consider a classroom that is roughly \( 5 \mathrm{~m} \times 10 \mathrm{~m} \times 3 \mathrm{~m}...

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Consider a classroom that is roughly \( 5 \mathrm{~m} \times 10 \mathrm{~m} \times 3 \mathrm{~m} \). Initially \( \mathrm{t}=27^{\circ} \mathrm{C} \) and \( \mathrm{P}=1 \mathrm{~atm} \). There are 50 people in an insulated class loosing 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 \( 42^{\circ} \mathrm{C} \) and person feels uncomfortable above this temperature. Molar heat capacity of air \( =(7 / 2) \mathrm{R} \).
(A) \( 4.34 \) minutes
(B) \( 5.91 \) minutes
(C) \( 6.86 \) minutes
(D) \( 7.79 \) minutes
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