SOLUTION: Please help.
the amount of light (measured in foot-candles) produced by a light source varies inverse;y as the square of the distance from the source. If the illumination produced
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Question 888574: Please help.
the amount of light (measured in foot-candles) produced by a light source varies inverse;y as the square of the distance from the source. If the illumination produced 1 m from a light source is 768 foot-candles, find the illumination produced 6 m from the same source.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
the amount of light (measured in foot-candles) produced by a light source varies inverse;y as the square of the distance from the source. If the illumination produced 1 m from a light source is 768 foot-candles, find the illumination produced 6 m from the same source.
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L = k/d^2
Solve for "k"::
768 = k/1^2
k = 768
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Equation:
L = 768/d^2
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Ans: L = 768/6^2 = 21 1/3 ft-candles
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Cheers,
Stan H.
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