Describe charcoal found under a stone at stonehenge

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Charcoal found under a stone at Stonehenge, England, has a carbon-14 activity that is 0.50 that of new wood. How old is the charcoal? (The half life of carbon-14 is 5,730 years.)

A. 5.7E3 years

B. 1.1E4 years

C.4.5E-3 years

D. 1.1E4 years

E. 5.7E3 years

Reference no: EM13175647

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