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A Wooden Object from a Prehistoric Site Has a Carbon-14

Question 5

Multiple Choice

A wooden object from a prehistoric site has a carbon-14 activity of 10 cpm compared to 40 cpm for new wood.If carbon-14 has a half-life of 5730 yr,what is the age of the wood?


A) 1430 yr
B) 5730 yr
C) 11 500 yr
D) 17 200 yr
E) 22 900 yr

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