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The sound level measured in a room by a person watching a movie on a home theater system varies from 50 dB during a quiet

The sound level measured in a room by a person watching a movie on a home theater system varies from

50 dB during a quiet part to 90 dB

__________ times

Please solve

during a loud part. Approximately how many times louder is the latter sound?

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University Physics with Modern Physics

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