Sustainable Energy, SI Edition
Sustainable Energy, SI Edition
2nd Edition
ISBN: 9781337672092
Author: DUNLAP, Richard A.
Publisher: Cengage Learning
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Chapter 3, Problem 9P
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Calculate the amount of coal produced in the UK between 1820 and the present.

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Assume that in earthquake-resistant design, the following relations take place: Y=ce, where Y is the ground motion intensity at the building site, X is the magnitude of an earthquake, and the constant c is related to the distance between the site and center of the earthquake. Assuming that X is exponentially distributed, fx (x)=ex with x 20 and >2, (a) Derive the PDF and CDF of Y, including the bounds, and sketch them. (b) Determine the median (i.e., 50%-fractile) and 90%-fractile (value of Y that has a probability of not being exceeded of 90%) of Y. (c) Determine the mean and variance of Y by using the PDF of Y derived under (a). (d) Determine the mean and variance of Y directly from the PDF of X.
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