A wooden object from a prehistoric site has a carbon-14

Last updated: 7/30/2022

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? 22 900 yr 17 200 yr 1430 yr 5730 yr 11 500 yr