The illumination of an object by a fight source is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. If two fight sources, one three times as strong as the other, are placed 10 ft apart, where should an object be placed on the fine between the sources so as to receive the least illumination?
Calculus: Early Transcendentals
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Statistics for The Behavioral Sciences (MindTap Course List)
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Research Methods for the Behavioral Sciences (MindTap Course List)
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