A 60-kg person accidentally ingests a small source of alpha particles ( RBE=15). The activity of the source is 0.04 Ci,  the half-life of the source is 110 years, and each alpha particle emitted has an energy of 0.586 MeV. It takes 12hours for the alpha source to pass through the person's digestive system and exit the body.  a). How many alpha particles are absorbed by the person ( assume that 100 percent of the alpha particles emitted by the source are absorbed by the person)?   b). How many energy, in Joules,  is deposited in the person by the source?  c). What is the absorbed dose in rad?  d). What is the absorbed dose in rem?

A 60-kg person accidentally ingests a small source of alpha particles ( RBE=15). The activity of the source is 0.04 Ci,  the half-life of the source is 110 years, and each alpha particle emitted has an energy of 0.586 MeV. It takes 12hours for the alpha source to pass through the person's digestive system and exit the body. 

a). How many alpha particles are absorbed by the person ( assume that 100 percent of the alpha particles emitted by the source are absorbed by the person)?  

b). How many energy, in Joules,  is deposited in the person by the source? 

c). What is the absorbed dose in rad? 

d). What is the absorbed dose in rem?