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4.8 x 1016 Bq/kg? Hc Aftor contu SON

4.8 x 1016 Bq/kg? Hc Aftor contu SON

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Please answer Part 2 of the question. 

What is the initial activity of a 5 g radioactive source of 60Co given that the specific activity of 6⁰Co is 4.8 x 1016 Bq/kg? How many decays per second does this correspond to? After twenty years what activity does this source still provide if 6⁰Co has a half life of 5.3 years? What is the initial intensity, I, of the 5 g 6⁰Co source at a distance of 1m if the gamma rays emitted by 6ºCo have an average energy of 1.9 x 10-1³ J?
Transcribed Image Text:What is the initial activity of a 5 g radioactive source of 60Co given that the specific activity of 6⁰Co is 4.8 x 1016 Bq/kg? How many decays per second does this correspond to? After twenty years what activity does this source still provide if 6⁰Co has a half life of 5.3 years? What is the initial intensity, I, of the 5 g 6⁰Co source at a distance of 1m if the gamma rays emitted by 6ºCo have an average energy of 1.9 x 10-1³ J?
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