Question

5. How is ultrasound used in cleaning?
6. Define reverberation.
7. Name two animals which produce ultrasound.​

Answer 1

5 .Ultrasonic cleaning uses cavitation bubbles induced by high frequency pressure (sound) waves to agitate a liquid. The agitation produces high forces on contaminants adhering to substrates like metals, plastics, glass, rubber, and ceramics. This action also penetrates blind holes, cracks, and recesses.

6. Reverberation, in psychoacoustics and acoustics, is a persistence of sound after the sound is produced. ... Reverberation occurs naturally when a person sings, talks, or plays an instrument acoustically in a hall or performance space with sound-reflective surfaces.

7. Two animals that produces ultrasound are Bats and dolphins

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Answer 2

Answer:

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