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