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What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th
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Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m
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How does the wavelength of a wave change when frequency decreases? when frequency increases?...
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