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(a) What is meant by the (a) 'pitch' of sound, and (b) 'quality' of sound? (b) What is ultrasound? State two uses of ultrasound. |
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Answer» (a) What is meant by the (a) 'pitch' of sound, and (b) 'quality' of sound? (b) What is ultrasound? State two uses of ultrasound. |
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