The intensity L(x) of light x feet beneath the surface of the ocean satisfies the differential equation dL/dx=-kL. From experience, a diver knows that diving to 19 ft in a sea cuts the intensity in half. He cannot work without artifical light when the intensity falls below one-fifth of the surface value. About how deep can he expect to work without artifical light? round to the nearest tenth

The intensity L(x) of light x feet beneath the surface of the ocean satisfies the differential equation dL/dx=-kL. From experience, a diver knows that diving to 19 ft in a sea cuts the intensity in half. He cannot work without artifical light when the intensity falls below one-fifth of the surface value. About how deep can he expect to work without artifical light? round to the nearest tenth

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Wave Optics

Section: Chapter Questions

Problem 38P

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