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16 December, 08:43

Humans can typically perceive frequencies that range from 20 Hz-20 kHz. Dogs can hear sounds up to 45 kHz. Dog whistles produce sound waves that range from 23-54 kHz; therefore, they cannot be heard by the human ear.

Which statement accurately describes the pitch and wavelength of the sound waves produced by a dog whistle?

high pitch with a long wavelength

high pitch with a short wavelength

low pitch with a short wavelength

low pitch with a long wavelength

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Answers (2)
  1. 16 December, 09:51
    0
    Pitch is directly related to the frequency of the sound. In this item, we are given that the frequency of the sound is higher compared to those which are audible to the human being's ears. The pitch therefore of the dog's whistle is high.

    On the other hand, the frequency and the wavelength of a certain wave are inversely proportional. This means that the high frequency wave will have a short wavelength.

    Hence, the answer to this item would have to be "high pitch with a short wavelength"

    The answer to this item is the second option.
  2. 16 December, 12:01
    0
    High pitch with a short wavelength
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