Chemistry, 19.10.2019 12:00 davidheredia9

An observer notes that the pitch of a sound is becoming progressively higher. the observer can conclude that the sound is moving

away and the frequency of the sound wave is increasing.
away and the frequency of the sound wave is decreasing.
closer and the frequency of the sound wave is decreasing.
closer and the frequency of the sound wave is increasing.

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An observer notes that the pitch of a sound is becoming progressively higher. the observer can concl...

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