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OpenStudy (anonymous):
the intensity, N of light at its source is 100%. The intensity, N at a distance, D centimeters from the source is given by the formula N=100 use the formula to determine the intensity of the light 50cm from the source
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OpenStudy (dumbcow):
plug 50 into the formula sorry the formula isn't showing...
OpenStudy (perl):
, N = 100 / d^2 perhaps ?
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