Question: When you are only 0 . 2 5 0 m away from a blender, the sound level is a dangerous 1 . 2 0 x

When you are only 0.250 m away from a blender, the sound level is a
dangerous 1.20 x 102 dB. How far away from the blender must you be to
reduce the intensity level to 90.0 dB? You can assume the sound travels
in spherical waves and that the minimal detectable intensity at this
frequency is I0=10-12 W/m2.

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