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What is the wavelength of the laser beam in the liquid?

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A helium-neon laser beam has a wavelength in air of 633nm. It takes 1.38 ns for the light to travel through 30cm of an unknown liquid.

What is the wavelength of the laser beam in the liquid?

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  1. d=rt, you want r


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    the number of times you will come close to getting laid.
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