Asked by Michael

How much time does it take a pulse of light to travel through 120 m of water?
Answered by bobpursley
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.
Answered by Poop Daddy
a^2 + b^4 = gtrdrvf
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