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Home Q & A Board Science-Related Homework Help Physics
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Chery Chery
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7 years ago
A person is walking outdoors on a cold day when the temperature is -20°C. He is breathing at the rate of 16 breaths per minute, and each time he breathes in he inhales 0.0050 m3 of air. At what rate does he lose thermal energy by breathing if the air in his lungs is heated to body temperature (37°C) before it is exhaled? The specific heat of air is 1020 J/kg ∙ K and the density of air is 1.29 kg/m3.
A) 60 W
B) 90 W
C) 100 W
D) 150 W
E) 300 W
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College Physics

College Physics


Edition: 1st
Authors:
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HotMathHotMath
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7 years ago
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Chery Author
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#2
7 years ago
I needed this so much, thanks
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