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Mathematics, 21.04.2020 15:25 doversu14

The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a screen 56 ft from a light is 2.7 foot-candles, find the intensity on a screen 70 ft from the light.

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The intensity I of light varies inversely as the square of the distance D from the source. If the in...

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