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Home Q & A Board Science-Related Homework Help Physics
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tankster tankster
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7 years ago
A person is walking outdoors on a cold day when the temperature is -20°C. Each time he breathes, he inhales 0.0050 m3 of air. He is breathing at the rate of 16 breaths per minute. At what rate does he lose heat from 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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Physics

Physics


Edition: 4th
Author:
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longhairlonghair
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7 years ago
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tankster Author
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7 years ago
Smart ... Thanks!
acaruso
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2 hours ago
this is exactly what I needed
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