AOK decays to 40Ar with a half-life of 1.25 x 10° yr. Assume that rocks contain no 40Ar when they form, and that the only way 4Ar can be present is through the decay of 40K. If the ratio of 40K to 40Ar in a particular rock is found to be 1:3, what is the age of the rock?

AOK decays to 40Ar with a half-life of 1.25 x 10° yr. Assume that rocks contain no 40Ar when they form, and that the only way 4Ar can be present is through the decay of 40K. If the ratio of 40K to 40Ar in a particular rock is found to be 1:3, what is the age of the rock?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

ADK decays to 4Ar with a half-life of 1.25 x 10 yr. Assume that rocks contain no 4"Ar when they
form, and that the only way 4Ar can be present is through the decay of OK. If the ratio of 40K to 40Ar
in a particular rock is found to be 13, what is the age of the rock?

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