21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 24, Problem 11QP
To determine
The Living environment conditions for Thermophile organisms.
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Before brewers had access to propane or natural gas, they would heat large,
insulated vats of water by adding hot stones to the water. The stones are heated to
800°C before they are dropped into a particular well-insulated large vat holding
1,200 kg of water at 20°C. If we want to heat the water to 70°C, what mass of
stones must be added the the vat? The specific heat of the stone is about 790
J/kg°C and the specific heat of water is 4,186 J/kg°C. Assume the mass of the water
does not change and that the vat is a perfect insulator so no internal energy is lost to
6.
9
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
much will the weight of the culture increase during the first 7 hours of growth? How much will the weight of the culture increase from the end of the 7th hour to the end of the 14th
hour of growth?
grams.
The weight increase during the first 7 hours is approximately
(Type an integer or decimal rounded to three decimal places as needed.)
The weight increase from the 7th to the 14th hour is approximately grams.
(Type an integer or decimal rounded to three decimal places as needed.)
CH
Chapter 24 Solutions
21st Century Astronomy
Ch. 24.1 - Prob. 24.1CYUCh. 24.2 - Prob. 24.2CYUCh. 24.3 - Prob. 24.3ACYUCh. 24.3 - Prob. 24.3BCYUCh. 24.4 - Prob. 24.4CYUCh. 24 - Prob. 1QPCh. 24 - Prob. 2QPCh. 24 - Prob. 3QPCh. 24 - Prob. 4QPCh. 24 - Prob. 5QP
Ch. 24 - Prob. 6QPCh. 24 - Prob. 7QPCh. 24 - Prob. 8QPCh. 24 - Prob. 9QPCh. 24 - Prob. 10QPCh. 24 - Prob. 11QPCh. 24 - Prob. 12QPCh. 24 - Prob. 13QPCh. 24 - Prob. 14QPCh. 24 - Prob. 15QPCh. 24 - Prob. 16QPCh. 24 - Prob. 17QPCh. 24 - Prob. 18QPCh. 24 - Prob. 20QPCh. 24 - Prob. 21QPCh. 24 - Prob. 22QPCh. 24 - Prob. 23QPCh. 24 - Prob. 24QPCh. 24 - Prob. 25QPCh. 24 - Prob. 26QPCh. 24 - Prob. 27QPCh. 24 - Prob. 29QPCh. 24 - Prob. 30QP
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