Monday
April 21, 2014

Homework Help: Algebra II

Posted by Zach on Monday, November 21, 2011 at 9:58pm.

The intensity of illumination at a given point is directly proportional to the intensity of the light source and inversely proportional to the square of the distance from the light source. If a desk is properly illuminated by a 74.0 w lamp 8.00 ft from the desk, what size lamp will be needed to provide the same lighting at a distance of 12.0 ft?

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