EBK UNDERSTANDING OUR UNIVERSE (THIRD E
3rd Edition
ISBN: 9780393631760
Author: Blumenthal
Publisher: VST
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Chapter 18, Problem 18QAP
To determine
The condition in which thermophile organism can survive.
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Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2,430 kJ/kg at body temperature, and the body can produce as much as 1.6 kg of sweat per hour. If sweating were the only heat dissipation mechanism, what would be the maximum sustainable metabolic rate, in watts, if 81% of the energy used by the body goes into waste heat? __________________W
A yeast culture weighing 2 grams is removed from a refrigerator unit and is expected to grow at the rate of W' (t) = 0.2e0.4t grams per hour at a higher controlled temperature. How
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CH
The recommended daily caloric intake is 2000 calories (8,400,000J). This is because this is the same value for how much the average body loses to heat and work in a typical day (your change in energy is zero because you take in the same amount of energy you lose).
A) If you lose a total of 8,400,000J (Qout+W=total lost), but consume 1200 calories of food (5,000,000J), what would your change in energy be?
B) Assuming your change in energy is negative (hint-it should be), where does your body get the extra energy to maintain it's temperature?
Chapter 18 Solutions
EBK UNDERSTANDING OUR UNIVERSE (THIRD E
Ch. 18.1 - Prob. 18.1CYUCh. 18.2 - Prob. 18.2CYUCh. 18.3 - Prob. 18.3CYUCh. 18.4 - Prob. 18.4CYUCh. 18 - Prob. 1QAPCh. 18 - Prob. 2QAPCh. 18 - Prob. 3QAPCh. 18 - Prob. 4QAPCh. 18 - Prob. 5QAPCh. 18 - Prob. 6QAP
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