Question

1. A person standing 1.00 m from a portable speaker hears its sound at an intensity of 7.50 x10^ -3 W/m^2 .

(a) Find the corresponding decibel level.

(b) Find the sound intensity at a distance of 35.0 m, assuming the sound propagates as a spherical wave.

(c) Find the decibel level at a distance of 35.0 m

Answer #1

A person standing 1.25 m from a portable speaker hears its sound
at an intensity of 7.90 ✕ 10−3 W/m2.
HINT
(a)
Find the corresponding decibel level.
dB
(b)
Find the sound intensity (in W/m2) at a distance of
36.0 m, assuming the sound propagates as a spherical wave.
W/m2
(c)
Find the decibel level at a distance of 36.0 m.

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ONLY ANSWER IF YOU KNOW THE ANSWER TO ALL QUESTIONS !!!
OTHERWISE I WILL GIVE A THUMBS DOWN!!! PLEASE INCLUDE UNITS WHEN
ANSWERING!!! THANK YOU
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