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OpenStudy (anonymous):
Sound waves with frequencies below 20 hertz are called infrasonic and those with frequencies above 20,000 hertz are called ultrasonic. Answer True False
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OpenStudy (anonymous):
Ultrasonic > 20KHz infrasonic < 20 Hz
OpenStudy (anonymous):
Super True xD
OpenStudy (anonymous):
thank you so much for taking the time to answer my stupid questions lol
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