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2007-02-21 05:03:53 · 3 answers · asked by mr_masoud_m 1 in Science & Mathematics Physics

3 answers

the sound wave with frequency higher than 20,000Hz.
you may enter the words ULTRASONIC in any of the sites like google or yahoo,to find an answer.you may also get a perfect answer if you go to wikipedia,which is an online encyclopedia and type "ULTRASONIC WAVES"

2007-02-21 05:27:55 · answer #1 · answered by SWETA 2 · 0 0

just type that word in and there you go.splite the words you know supersonic right fast ultra is a low frq that we can't hear like the way they look at babys inside moms belly

2007-02-21 13:09:29 · answer #2 · answered by MrMike 3 · 0 0

above 20KHz the limit of human hearing

2007-02-21 13:18:30 · answer #3 · answered by Anonymous · 0 0

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