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What was the first instrument to ever record an earthquake?
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In the cores of extremely hot red giants, nuclear reactions convert helium to
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What would occur if the index of refraction of a material was less than n=1? the speed of light would increase to a speed larger than the maximum speed of light in a vacuum. the light wave would not bend at all though the material. the light wave would not be able to refract and would instead reflect off of the material. the speed of light would reduce to values close to 0 m/s.
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A rod is made of three segments of equal length with different masses. The total mass of the rod is...
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