A wooden artifact from an ancient tomb contains 60 percent of the carbon-14 that is present in living trees.
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A wooden artifact from an ancient tomb contains 60 percent of the carbon-14 that is present in living trees.

[From: ] [author: ] [Date: 12-03-10] [Hit: ]
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A wooden artifact from an ancient tomb contains 60 percent of the carbon-14 that is present in living trees. How long ago was the artifact made? (The half-life of carbon-14 is 5730 years.)

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.6 = (1/2)^(t/5730)
t = 4,222.8 years ago
1
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