Fundamentals of Physics Study Set 2
Physics & Astronomy
Quiz 42 :
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Q61 Q61 Q61
40K decays to 40Ar with a half-life of 1.25 x 109 yr.Assume that rocks contain no 40Ar when they form, and that the only way 40Ar 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?