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A piece of charcoal used for cooking is found at the remains of an ancient campsite. A 1.2 kg sample of carbon from the wood has an activity of 1660 decays per minute. Find the age of the charcoal. Living mate- rial has an activity of 15 decays/minute per gram of carbon present and the half-life of 14C is 5730 y. The answer is not 13657.8
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RoPom Tiy Ro วา 5750 dm (-a 2m2 d8 000 ecou m

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