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Evee1 Evee1
  • 14-05-2015
  • Health
Answered

sound with a frequency above 20000 hertz

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Anonymous Anonymous
  • 16-05-2015

A sound with a frequency above 20,000 hertz is called an "ultrasound"

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amyhyd amyhyd
  • 17-05-2015

An ultra sound is a sound which has a frequency above 20 000 hertz

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