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Why can ultrasound not be heard by humans?​
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Why can ultrasound not be heard by humans?​

User Gordon Bockus
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the person aboved me answered it
User Nicolas Degen
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Ultrasounds have sound waves that have frequencies greater than 20,000Hz (20 kHz). This is above the normal hearing range for humans which is why we can not here ultrasounds
User Andresp
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