A device used in radiation therapy for cancer contains 0.45 g of cobalt-60 (59.933 819 u). The half-life of this isotope is 5.27 yr. Determine the…

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A device used in radiation therapy for cancer contains 0.45 g of cobalt-60 (59.933 819 u). The half-life of this isotope is 5.27 yr. Determine the activity (in Bq) of the radioactive material.Number :-___________________ Unit:- Bq

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