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27 June, 21:07

A human body while sleeping generates about 300 BTUs of body heat per hour. If two people are sleeping in a bedroom that is 15 ft * 12 ft * 10 ft, how many BTUs per cubic foot do they produce in 7 hours? (to the nearest tenth) A) 0.2 BTUs/ft3 B) 1.2 BTUs/ft3 C) 1.5 BTUs/ft3 D) 2.3 BTUs/ft3

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  1. 27 June, 22:49
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    Given:

    one person can produce:

    E = 300 BTUs of body heat per hour

    dimensions of the bedroom is:

    V = 15 ft * 12 ft * 10 ft

    required: is the energy per volume if 2 persons sleeps in 7 hours

    let T be the total energy produce per volume

    T = (300 BTU per hour per person) (7 hours) (2 person) / (15 ft * 12 ft * 10 ft)

    T = 2.3 BTU / ft^3
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