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.
Answers: 3
of light varies inversely as the square of the magnitude of distance D from the source.
=2.7 foot-candle, 
= 56 ft
=?, 
= 70 ft.
foot-candle
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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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