The radioactive nuclei 60Co is widely used in medical applications. It undergoes beta decay, and the total energy of the decay process is 2.82 MeV per decay event. The half-life of this nucleus is 272 days. Suppose that a patient is given a dose of 6.9 µCi of 60Co. If all of this material decayed while in the patient's body, what would be the total energy deposited there? (1 Ci = 3.70 × 1010 decays/s)
A) 11 J
B) 8.6 GJ
C) 3.9 J
D) 24 J
E) 4.15 MJ
Correct Answer:
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