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26-04-2024
Physics

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A shielded Gama-ray source yields a dose rate of 0.048 rad/h at distance 1.0 m from average-sized person. Workers are allowed a maximum dose of 5.0 rad in 1 year. How close to the source may they operate, assuming 35-h work week? Assume intensity of radiation falls off as 1/r².

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