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Physics, 22.06.2019 13:40
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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Physics, 22.06.2019 14:40
Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?
Answers: 1
___HNO3 + ___Mg(OH)2 ___H2O + ___Mg(NO3)2...
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