The sound level measured in a room by a person watching a movie on a home theater system varies from 40 dB during a quie

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answerhappygod
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The sound level measured in a room by a person watching a movie on a home theater system varies from 40 dB during a quie

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The sound level measured in a room by a person watching a movie on a home theater system varies from 40 dB during a quiet part to 80 dB during a louder part. approximately how many times louder is the latter sound?
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