A person with lymphoma receives a dose of 35 gray in the form of gamma radiation during a course of radiotherapy. Most of this dose is absorbed in 18 grams of cancerous lymphatic tissue. i. How much energy is absorbed by the cancerous tissue?  ii. If this treatment consists of five 15-minute sessions per week over the course of 5 weeks and just one percent of the gamma photons in the gamma ray beam are absorbed, what is the power of the gamma ray beam?  iii. If the gamma ray beam consists of just 0.5 percent of the photons emitted by the gamma source, each of which has an energy of 0.03 MeV, what is the activity, in Curies, of the gamma ray source?

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D. A person with lymphoma receives a dose of 35 gray in the form of gamma
radiation during a course of radiotherapy. Most of this dose is absorbed in 18 grams of cancerous lymphatic tissue.
i. How much energy is absorbed by the cancerous tissue? 

ii. If this treatment consists of five 15-minute sessions per week over the
course of 5 weeks and just one percent of the gamma photons in the
gamma ray beam are absorbed, what is the power of the gamma ray
beam? 
iii. If the gamma ray beam consists of just 0.5 percent of the photons
emitted by the gamma source, each of which has an energy of 0.03
MeV, what is the activity, in Curies, of the gamma ray source? 

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