The intensity L!x" of light x feet beneath the surface of
Chapter 6, Problem 57(choose chapter or problem)
The intensity L!x" of light x feet beneath the surface of the ocean satisfies the differential equation ! d d L x ! " #kL, where k is a constant. As a diver you know from experience that diving to 18 ft in the Caribbean Sea cuts the intensity in half. You cannot work without artificial light when the intensity falls below a tenth of the surface value. About how deep can you expect to work without artificial light?
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