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

question 23

Multiple Choice

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

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

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