A light source radiates 60.0 W of single-wavelength sinusoidal light uniformly in all directions. a) What is the intensity of the light at a distance of 0.400 m from the bulb

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

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Aswimming pool whose volume is 10 comma 000 gal contains water that is 0.01% chlorine. starting at tequals0, city water containing 0.003% chlorine is pumped into the pool at a rate of 5 gal/min. the pool water flows out at the same rate. what is the percentage of chlorine in the pool after 1 hour? when will the pool water be 0.006% chlorine?