Over a years time, a person receives a biologically

Chapter , Problem 4

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Over a years time, a person receives a biologically equivalent dose of 24 mrem (millirems) from cosmic rays, which consist primarily of high-energy protons bombarding earths atmosphere from space. The relative biological eff ectiveness of protons is 10. (a) What is the persons absorbed dose in rads? (b) The person absorbs 1.9 3 1023 J of energy from cosmic rays in a year. What is the persons mass?

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