Question

how much cobalt-60 remains 15 years after it is initially made?cobalt-60 has half life 5.27

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the mass of cobalt-60 in a sample is found to have decreased from 0.800g to 0.200g in a period of 10... Cobalt‑60 is subject to radioactive decay, and each year the amount present is reduced by 12.3%.... The amount of a radioactive substance remaining after t years is given by the function , where m is...