A patient swallows a radiopharmaceutical tagged with phosphorus-32 (P), a B¯ emit- ter with a half-life of 14.3 days. The aver- age kinetic energy of the emitted electrons is 750 keV. If the initial activity of the sample is 1.27 MBq, find the number of electrons emit- ted in a 15-day period. Answer in units of decays. Find the total energy deposited in the body during the 15 days.

A patient swallows a radiopharmaceutical tagged with phosphorus-32 (P), a B¯ emit- ter with a half-life of 14.3 days. The aver- age kinetic energy of the emitted electrons is 750 keV. If the initial activity of the sample is 1.27 MBq, find the number of electrons emit- ted in a 15-day period. Answer in units of decays. Find the total energy deposited in the body during the 15 days.

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