How can find the annual radiation absorbed dose


An adult weighing 70kg contains about 170g of K. The beta decay of 40K that is a natural part of the body. The relative abundance of 40K is 0.0118% its half life is1.28x109 years, and its beta particles have an average kinetic energy of the 0.55MeV.

1. Determine the total activity of 40K in this person

2. How can find the annual radiation absorbed dose arising from this internal 40K

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Chemistry: How can find the annual radiation absorbed dose
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