When a sound source is moving away from an observer, the observer will hear a lower pitch. This is due to an increase in the frequency of the sound wave. a decrease in the amplitude of the sound wave.

When a sound source is moving away from an observer, the observer will hear a lower pitch. This is due to

an increase in the frequency of the sound wave.
a decrease in the amplitude of the sound wave.
an increase in the amplitude of the sound wave.
a decrease in the frequency of the sound wave.

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When a sound source is moving away from an observer, the observer will hear a lower pitch. This is due to an increase in the frequency of the sound wave. a decrease in the ampli…

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