While sitting on the couch watching television for two hours, a person's metabolism converts food into about 175 kcal (7.32 x 10 3) of energy. Assume an equal amount of energy is lost to the environment so there is no net change in the person's internal energy. The person's body temperature is 98.6°F and the room temperature is 69.0 F. Both the person's body temperature and the room temperature are considered to be essentially unchanged during this time. (a) Determine the entropy change over the course of the two hours in the person. -2360 X 1/K

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Answer part A

While sitting on the couch watching television for two hours, a person's metabolism converts food into about 175 kcal (7.32 x 10 3) of energy.
Assume an equal amount of energy is lost to the environment so there is no net change in the person's internal energy. The person's body
temperature is 98.6°F and the room temperature is 69.0 F. Both the person's body temperature and the room temperature are considered to be
essentially unchanged during this time.
(a) Determine the entropy change over the course of the two hours in the person.
-2360
X 1/K
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Transcribed Image Text

While sitting on the couch watching television for two hours, a person's metabolism converts food into about 175 kcal (7.32 x 10 3) of energy. Assume an equal amount of energy is lost to the environment so there is no net change in the person's internal energy. The person's body temperature is 98.6°F and the room temperature is 69.0 F. Both the person's body temperature and the room temperature are considered to be essentially unchanged during this time. (a) Determine the entropy change over the course of the two hours in the person. -2360 X 1/K

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