physics

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An unclothed student is in 24

C room.
If the skin temperature of the student is
37

C, how much heat is lost from his body
in 6 min, assuming that the emissivity of the
skin is 0.83 and the surface area of the student
is 1.5 m2
. The Stephan-Boltzmann constant
is 5.6696 × 10
−8 W/m2
· K
4
.

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