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GroupProblemsChap9

GroupProblemsChap9 - Names Geomath In-Class Problems 9.9...

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Names: ______________________ April 22, 2010 Geomath: In-Class Problems 9.9 & 9.10 Part 1) Read problem 9.9 in the text. Given 2 2 2 2 1 e p z r r r = 1) What is the volume of a disk Δ z thick at some arbitrary z i ? Hint: volume = area of disk times its thickness. 2) Express the volume of the Earth as a sum of N of the above disks. 3) Rewrite the discrete sum as an integral and solve the definite integral using the limits –r p & r p . Continue next page
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