18. Waves & Sound
Sound Intensity
Multiple Choice
Multiple ChoiceA speaker at a rock concert is causing you pain, so you reason the sound level must be 130 dB. The speaker is 11 m away from you. To what final distance from the speaker should you move for the sound level to reach a less-painful 105 dB? Keep in mind that we are ignoring absorption of sound energy by air and objects.
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