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A Person Is Losing Thermal Energy Through the Skin at a Rate

Question 63

Multiple Choice

A person is losing thermal energy through the skin at a rate of 120 W when his skin temperature is 30 °\degree C.He puts on a sweater,and his skin temperature rises to 33 °\degree C.The effective thermal conductivity between his core and the environment changes from 0.22 W/m·K to 0.18 W/m·K.At what rate is he now losing thermal energy?


A) 98 W
B) 69 W
C) 63 W
D) 56 W

Correct Answer:

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