SOLUTION: A wooden artifact from an archaeological dig contains 80 percent of the Carbon-14 that is present in living trees. To the nearest year, about how many years old is the artifact? (T
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Question 1152999: A wooden artifact from an archaeological dig contains 80 percent of the Carbon-14 that is present in living trees. To the nearest year, about how many years old is the artifact? (The half-life of Carbon-14 is 5730 years.)
yr
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A wooden artifact from an archaeological dig contains 80 percent of the Carbon-14 that is present in living trees.
To the nearest year, about how many years old is the artifact?
(The half-life of Carbon-14 is 5730 years.)
:
The radiation decay formula
, where
A = resulting amt after t time
Ao = initial amt of the substance
t = time of decay
h = half-life of substance
:
let Ao = 10 and A = 8
:
; (t is the numerator)
using natural logs
ln(2) = ln(.8)
using your calc
t = -5730 * -3219
t = 1845 yrs
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