When a vertical beam of light passes through a transparent medium, the rate at which its intensity I decreases is propor

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When A Vertical Beam Of Light Passes Through A Transparent Medium The Rate At Which Its Intensity I Decreases Is Propor 1 (40.41 KiB) Viewed 11 times

When a vertical beam of light passes through a transparent medium, the rate at which its intensity I decreases is proportional to I(t), where t represents the thickness of the medium (in feet). In clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity I of the incident beam. Find the constant of proportionality k, where = KI. dI dt k= What is the intensity of the beam 12 feet below the surface? (Give your answer in terms of I. Round any constants or coefficients to five decimal places.)