3. One compression and one rarefaction together make two waves.
4. Pitch is related to the loudness of sound.
5. If the amplitude is large, the sound is loud.
6. Air molecules travel along with the sound wave.
7. A sound with frequency greater than 20 Hz is called ultrasonic
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3
Answer:
SORRY DEAR BUT CAN'T UNDERSTAND THE EXACT QUESTION SO... SORRY ... MARK THIS ANSWER AS A BRAINLENT ANSWER AND ALSO FOLLOW ME PLEASE
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2
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3. I don't know
4. false loudness - frequency
5. false loud - less
6. true
7. false 20hz - 20000hz
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