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How much time does it take a pulse of light to travel through 120 m of water?

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2 answers

  1. time=distance/speedlight

    now the speed of light in water is slowed..

    speedinwater=speedlightfreespace/(4/3)

    look up the speed of light in free space, and memorize it.

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  2. a^2 + b^4 = gtrdrvf

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