Question

Why we are not able to hear sound
over 20,000 Hz????
​

Answer 1

Answer:

Because it's becomes ultrasonic

Explanation:

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Answer 2

Explanation:

Our ears possess minuscule hair cells that help essentially “grab” sound waves that our ear later processes into intelligible sounds. Unfortunately, these small hair cells do not regrow even when they're damaged or die. This loss of hair results in a lessened ability to hear higher frequency ranges over time.