Chemistry, 23.02.2021 04:50 shymitch32

The Doppler Effect is a the change in loudness of a wave as its source moves in relation to an observer
b. the change in frequency of a wave as its source moves in relation to an observer
c. the change in amplitude of a wave as its source moves in relation to an observer
d. a constant loudness that does not change based on source or observer

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