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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Global Edition
12
Sound
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12-1: Characteristics of Sound
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12-2: Intensity of Sound; Decibels
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12-3: Loudness
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12-4: Sources of Sound: Strings and Air Columns
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12-5: Quality of Sound, Superposition
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12-6: Interference; Beats
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12-7: Doppler Effect
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12-8: Shock Waves; Sonic Booms
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Problem 20
A
  1. 9×10−6 W9 \times 10^{-6} \textrm{ W}
  2. 6 million people6 \textrm{ million people}
Giancoli 7th "Global" Edition, Chapter 12, Problem 20 solution video poster
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