Welcome to science world! Now, most people will associate waves with water, but water isn't the only thing that travels in waves. No, sound also travels in waves. So when you hit something it vibrates ...
Ultrasound close ultrasoundSound with a frequency greater than 20,000 Hz (20 kHz). waves have a frequency higher than the upper limit for human hearing – above 20,000 Hertz (Hz). Different species of ...
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