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What happens to the frequency heard when an observer begins moving toward the stationary source of a sound? A. The frequency decreases B. It depends on how fast the observer is moving C. The frequency
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What happens to the frequency heard when an observer begins moving toward the stationary source of a sound?

A. The frequency decreases
B. It depends on how fast the observer is moving
C. The frequency increases
D. Nothing happens

User AlphaCR
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The answer is the letter c
User Clio
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