Chemistry, 06.05.2020 07:40, kelfaminu

A source of radiation has an intensity of 130 units at a dis- tance of 10.0 feet. How far away from the source would you have to be to reduce the intensity to 15 units?

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A source of radiation has an intensity of 130 units at a dis- tance of 10.0 feet. How far away from...