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Q1: According to the correspondence principle, a new
Q7: The function of graphite in the first
Q7: The pitch of a guitar relates to
Q10: A radiation detector measures radioactivity decay of
Q18: No net force acts on a loop
Q35: For absorption spectra to exist<br>A)the light source
Q35: The crescent shapes of spots of light
Q37: The electric field established by a generator
Q74: A suitable electric pump in an electric
Q76: Which color of visible light carries the