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Q34: the lowest energy level in an atom<br>A)angular
Q47: New telescopes are using "adaptive optics." What
Q81: The prediction of special relativity that moving
Q84: oscillating atoms in a blackbody have this
Q91: An electron absorbing an ultraviolet photon will
Q104: If two slide projectors are connected in
Q112: The person who first explained the discrete
Q121: When a nucleus in an excited state
Q139: A helium neon laser generates light of
Q140: A magnifying glass with focal length 15