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Half life of carbon-14 in my precalculus class?
4.) The burial cloth of an Egyptian mummy is estimated to contain 59% of the carbon-14 it contained originally. The half -life of carbon-14 is 5730. How long ago was the mummy buried?
1 Answer
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- ?Lv 77 years ago
0.5 = e^(-5730)k
ln 2 = 5730 k
k = 1/5730 ln 2
1 - 0.59 = 0.41 = e^(-kT) where k = 1/5730 ln 2
ln 0.41 = - k T
- 1 / k ln (0.41) = T.
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