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Q4: A Doppler effect occurs when a source
Q16: At the same temperature,which move with the
Q21: Which of the following is not a
Q29: A very massive object A and a
Q29: When carbon and oxygen atoms combine,energy is<br>A)taken
Q38: Heat a copper wire and its electric
Q40: If you stake out a plot of
Q42: A car traveling along the highway needs
Q42: Two lamps,one with a thick filament and
Q60: When a 10-V battery is connected to