List any five appliances or instruments which are capable of producing infrasonic and ultrasonic.
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Infrasonic sound is produces by wind turbines, helicopters, meteors, avalanches, volcanoes and animals like elephants.
Ultrasonic sound is produced by vibrating quartz crystals, transducers, mobile device speakers and pest repelling machines.
Hope it helps uh.
Ultrasonic sound is produced by vibrating quartz crystals, transducers, mobile device speakers and pest repelling machines.
Hope it helps uh.
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