STUDY GUIDE 7, SELF TEST 4

Physics Department, University of Guelph.

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1. A 10.0 gram sample of tissue receives a dose of X-rays of 1.0 sievert. The WR for this particular radiation is 1.10.

(a) What is the dose in grays?

(b) How much energy in joules is absorbed by the sample?

2. Your dentists asks you if an alpha particle source might give him a better picture of your teeth than his X-ray tube. Would you encourage or discourage this change? Why?

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