Computer Science, asked by jerniganrichard12345, 1 year ago

Ultrasonic waves _____.

are painful to the human ear
are sound waves with frequencies below 20 Hz
can be used to see internal organs
travel most quickly through gases

Answers

Answered by parimheavenki

1

3rd is the correct ans

Answered by AnothaOne

1

The third one is the answer

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