At the site of a spill of radioactive iodine, radiation levels were four times the
Chapter 5, Problem 40(choose chapter or problem)
At the site of a spill of radioactive iodine, radiation levels were four times the maximum acceptable limit, so an evacuation was ordered. If R0 is the initial radiation level (at t = 0) and t is the time in hours, the radiation level R(t), inmillirems/hour, is given by R(t) = R0(0.996)t . (a) How long does it take for the site to reach the acceptable level of radiation of 0.6 millirems/hour? (b) How much total radiation (in millirems) has been emitted by that time?
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