<PRE><B>Question 564021</B>
An artifact was found and tested for its carbon-14 content. 
If 84% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)?
 Use that carbon-14 has half-life of 5,730 years.
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A(t) = Ao(1/2)^(t/5730)
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0.84*Ao = Ao(1/2)^(t/5730)
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(1/2)^(t/5730) = 0.84
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Take the log:
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(t/5730) = log(0.84)/log(1/2) = 0.2515
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t = 5730*0.2515 = 1441.32 years
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Cheers,
Stan H.
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