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Heyy mate....
Here is ur answer....
1) FLUTE-------------(C) vibrations in air
2)FREQUENCY------(D) measured in hertz
3)SOUND LEVEL-----(E) decibles
4)ULTRASONIC SOUND-------(B) frequency more than 20000 hz
5)INFRASONIC SOUND-------(A) frequency less than 20hz
Hope it helps
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