SOLUTION: Remember the definition of a decibel: dB=10log(I�10^12) where dB is the magnitude on the decibel scale and I is the intensity of the sound wave. If a quiet whisper is 30 dB

Question 962834: Remember the definition of a decibel:
dB=10log(I�10^12)
where dB is the magnitude on the decibel scale and I is the intensity of the sound wave. If a quiet whisper is 30 dB and the sound of a train whistle is 90 dB, how many times more intense is the sound of a train whistle than a whisper?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
whisper:

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train whistle:

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the train whistle is 10^6 or
one million times more
intense than the whisper

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