Problem: The sound intensity is 0.0080 W/m2 at a distance of 10 m from an isotropic (same intensity in all directions) point source of sound.(a) What is the power of the source?(b) What is the sound intensity 5.0 m from the source?(c) What is the sound level 10 m from the source? The threshold of human hearing is I0 = 1.0 × 10 -12 W/m2 .
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Problem Details
The sound intensity is 0.0080 W/m2 at a distance of 10 m from an isotropic (same intensity in all directions) point source of sound.
(a) What is the power of the source?
(b) What is the sound intensity 5.0 m from the source?
(c) What is the sound level 10 m from the source? The threshold of human hearing
is I0 = 1.0 × 10 -12 W/m2 .
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