SOLUTION: Please help me answer this question: An Artifcat is discovered at a certain site. If it has 79% of the carbon-14 it originally contained, what is the approximate age of the artifac

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Question 694031: Please help me answer this question: An Artifcat is discovered at a certain site. If it has 79% of the carbon-14 it originally contained, what is the approximate age of the artifact? (Carbon decays at the rate of 0.0125% annually)
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Artifact is discovered at a certain site. If it has 79% of the carbon-14 it originally contained, what is the approximate age of the artifact? (Carbon decays at the rate of 0.0125% annually)
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Note: 1 - 0.000125 = 0.999875
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0.79*Ao = Ao(0.999875)^t
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0.999875)^t = 0.79
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Take the log:
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t = ln(0.79)/ln(0.999875) = 1886 yrs old
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cheers,
Stan H.
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