At a rock concert a decibel meter registers 120 db when
At a rock concert, a decibel meter registers 120 dB when placed 2.8 m in front of a loudspeaker on the stage. How far away should you stand from the stage so you experience a somewhat reasonable loudness of 90 dB.
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at a rock concert a decibel meter registers 120 db when placed 28 m in front of a loudspeaker on the stage how far away
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