
Light The percent of light that will pass through a material is given by the formula log P=−kd, where P is the percent of light passing through the material, k is a constant that depends on the material, and d is the thickness of the material in centimeters.
The constant k for a piece of tinted glass is 0.5. How thick is a piece of this glass that allows 60% of the light incident to the glass to pass through it? Round to the nearest hundredth of a centimeter.

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