Frank has two balls that light up when they come in contact with a hard surface. He measures the power of the light from one of the balls at 24 m and find that it produces 120 W. If his second ball produces 115 W of power, at what distance would you expect the second ball to have the same brightness? Assume the light radiates uniformly in all directions.
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Frank has two balls that light up when they come in contact with a hard surface. He measures the power of the light from one of the balls at 24 m and find that it produces 120 W. If his second ball produces 115 W of power, at what distance would you expect the second ball to have the same brightness? Assume the light radiates uniformly in all directions.
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