A particular radioactive source produces 175 mrad of 1 MeV gamma rays per hour at a distance of 1.0 meter.
(a) Find how long could a person stand at this distance before accumulating an intolerable dose of 1 rem?
h
(b) Imagine the gamma radiation is emitted uniformly in all directions, determine at what distance would a person receive a dose of 10 mrad/h from this source?
m