The unit rem (roentgen equivalent for man) is the product of the radiation dose in rads and the relative biological effectiveness (rbe) of radiation. the si unit for effective dosage is the sievert (sv) and 1 sv = 100 rem.
1. at a distance of 36 ft , an ionizing radiation source delivers 6.5 rem of radiation. how close could you get to the source and still have no biological effects? express your answer to two significant figures and include the appropriate units.
2. a nurse administered 4.30 ml of a radioisotope solution that has an activity of 145 ? ci/ml . what total dose of the radioisotope did the patient receive? express your answer to three significant figures and include the appropriate units.
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