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A vibrating diaphragm sets up strong vibrations at the mount of a horizontal tube containing air and a small amount of fine powder. If the powder becomes arranged in plies 1 cm apart and the speed of sound in air is 330 m/s. The frequency of this sound is, in vibration/sec

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A vibrating diaphragm sets up strong vibrations at the mount of a horizontal tube containing air and a small amount of fine powder. If the powder becomes arranged in plies 1 cm apart and the speed of sound in air is 330 m/s. The frequency of this sound is, in vibration/sec






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