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Q25: If a twin goes on a trip
Q36: A nucleus of radium-223 undergoes alpha decay.
Q39: The fourth harmonic of a complex tone
Q60: A _ lens is thicker at the
Q73: All quarks have 1/3 the electric charge
Q75: For a body emitting blackbody radiation, the
Q79: Optical fibers work because of dispersion of
Q100: A heater is rated at 1200 watts
Q125: The expression(s) indicating the atomic number of
Q132: An atom can be excited into a