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Frequently Asked Question
Questions asked by users might not always be phrased in the clearest way.
A source of radiation has an intensity of 145 units at a distance of 10. feet. How far away from the source would you have to be to reduce the intensity to 19 units?
Accepted Answer
The intensity of radiation follows an inverse square law. This means that the intensity is inversely proportional to the square of the distance from the source. To find the new distance, we can set up a proportion:
(Intensity1 / Intensity2) = (Distance2^2 / Distance1^2)
Plugging in the values:
(145 / 19) = (Distance2^2 / 10^2)
Solving for Distance2:
Distance2 = sqrt((145 / 19)
10^2)
Distance2 ≈ 27.5 feet
Therefore, you would need to be approximately 27.5 feet away from the source to reduce the intensity to 19 units.
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