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anonymous

  • one year ago

What causes the increase in pitch as an ambulance siren moves toward you? A. the sound waves spread farther apart B. the speed of sound waves changes C. the amplitude of the sound waves changes D. the sound waves become compressed

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  1. Michele_Laino
    • one year ago
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    I think D, since the observed frequency is increased

  2. anonymous
    • one year ago
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    ooh okay, makes sense :) thank you!!

  3. Michele_Laino
    • one year ago
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    with respect to the emitted frequency

  4. Michele_Laino
    • one year ago
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    :)

  5. anonymous
    • one year ago
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    ahh okie:)

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