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For a stationary observer, when the source of a sound is moving , its ______ A- Amplitude increase B- pitch appears to change C- Speed increases D- decibel level decreases
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For a stationary observer, when the source of a sound is moving , its ______

A- Amplitude increase
B- pitch appears to change
C- Speed increases
D- decibel level decreases

User PWFraley
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4 votes
Answer: B- pitch appears to change
User Parker Ault
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