COLLEGE PHYSICS,VOLUME 1
2nd Edition
ISBN: 9781319115104
Author: Freedman
Publisher: MAC HIGHER
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Chapter 15, Problem 19QAP
To determine
In discussing the Carnot cycle, we say that extracting heat from a reservoir isothermally does not change the entropy of the universe. What is the effect on the entropy of the universe?
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How long will it take you to double your money if you invest it at a rate
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One hundred dollars is invested at 7.2% interest compounded annually.
Determine how much the investment is worth after:
a. I year
b. 5 years
c. 10 years
d. 20 years
e. Use your answers to parts (a)-(d) to estimate the doubling time for the
investment.
6) A farmer has 60 acres on which to plant oats or corn. Each acre of oats requires 100 lbs of fertilizer and 1 hour
of labor. Each acre of corn requires 50 lbs of fertilizer and 2 hours of labor. The farmer has 5000 lbs of
fertilizer and 100 hours available for labor. If the profit is $60 from each acre of oats and $100 from each acre
of corn, what planting combination will produce the greatest total profit?
a) Fill in the following chart to help organize the information given in the problem:
Oats
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Corn
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d) Write the objective function to answer the question of interest.
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Chapter 15 Solutions
COLLEGE PHYSICS,VOLUME 1
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