Answer to Question #169877 in Astronomy | Astrophysics for Lanna

Question

a) A core sample retrieved from the planet contained 4 grams of uranium and 7 grams of lead. Recalling that uranium decays into lead with a half-life of 4.5 billion years, determine the minimum age of the planet. 

b) Look up the half life of the carbon 14 isotope, used extensively to determine the age of human artifacts (pottery, etc.). After what period of time would this isotope no longer be useful in dating an artifact.? Why? 

Answer 1

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