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Showing posts with label Sound of frequency below 20 Hz is called page 337. Show all posts
Showing posts with label Sound of frequency below 20 Hz is called page 337. Show all posts

Wednesday, 16 December 2015

Sound of frequency below 20 Hz is called

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337. Sound of frequency below 20 Hz is called

A. audio sounds
B. infrasonic
C. ultrasonic
D. supersonics