A piece of wood found at an archeological site was found to have an activity of 14C activity 28% of what it was when the wood was living. The half life of 14C is 5715 years. How long ago was the wood living?

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Chapter31: Radioactivity And Nuclear Physics
Section: Chapter Questions
Problem 18CQ: In a 3109 yearold rock that originally contained some 238U, which has a halflife of 4.5109 years, we...
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A piece of wood found at an archeological site was found to have an activity of 14C activity 28% of what it was when the wood was living. The half life of 14C is 5715 years. How long ago was the wood living?

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