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12 November, 21:05

Two friends whisper at a volume of 20 decibels. Later, they converse at a volume of 40 decibels.

How much greater is the energy intensity of the conversation compared to the whisper?

A. 20 times

B. 10 times

C. 1,000 times

D. 100 times

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Answers (1)
  1. 12 November, 21:26
    0
    40 dB is 20 dB more power than 20 dB is. 20 dB more means 100 times as much.
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