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DC PANDEY ENGLISH-SOUND WAVES-Exercise 19.3
- A sound wave in air has a frequency of 300 H(Z) and a displacement amp...
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- Most people interpret a 9.0 dB increase in sound intensity level as a ...
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- A baby's mouth is 30 cm from her father's ear and 3.0 m from her mothe...
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- The faintest sound that can be heard has a pressure ampulitude of abou...
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