A longitudinal earthquake wave strikes a boundary between two types of rock at a 38o angle. As

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A longitudinal earthquake wave strikes a boundary between two types of rock at a 38o angle. As the wave crosses the boundary, the specific gravity of the rock changes from 3.6 to 2.8 assuming that the elastic modulus is the same for both types of rock, determine the angle of refraction.
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Personal Finance

ISBN: 978-1133595830

12th edition

Authors: Thomas Garman, Raymond Forgue

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