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Dolphins ca detect small fish whose size is about equal to the wavelength of the sound the dolphin makes with its echo-location system. A dolphin emits a chirp at a frequency of 220 kHz. Using the speed of water as 1530 m/s, what is the smallest fish this dolphin can detect.

  • physics -

    speed of sound = frequency x wavelength.
    Substitute 220,000 for frequency. Plug in speed of sound and calculate wavelength.

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