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Chemistry, 22.03.2021 06:30 morganluvsblueow9wtm

For an observer who stays in one spot when the source of a sound is moving, the sound wave's: A. Amplitude decreases
B. Speed increases
C. Amplitude increases
D. Frequency changes

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For an observer who stays in one spot when the source of a sound is moving, the sound wave's: A. Am...
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