Physics, 25.10.2021 14:00 brennae1801

Engineers are testing a new thin-film coating whose index of refraction is less than that of glass. They deposit a 460-nm-thick layer on glass, then shine lasers on it. A red laser with a wavelength of 640 nm has no reflection at all, but a violet laser with a wavelength of 400 nm has a maximum reflection. How the coating behaves at other wavelengths is unknown. What is the coatings index of refraction?

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acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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Engineers are testing a new thin-film coating whose index of refraction is less than that of glass....

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