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A particular radioactive source produces 125 mrad of 1 MeVgamma rays per hour at a distance of 1.0 m.
(a) How long could a person stand at thisdistance before accumulating an intolerable dose of 1 rem?
h
(b) Assuming the gamma radiation is emitted uniformly in alldirections, at what distance would a person receive a dose of5 mrad/h from this source?
m
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