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A person standing 1.15 m from a portable speaker hears its sound at an intensity of 6.70 x 10-3 w/m2. HINT (a) Find the corresponding

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A person standing 1.15 m from a portable speaker hears its sound at an intensity of 6.70 x 10-3 w/m2. HINT (a) Find the corresponding decibel level. dB (b) Find the sound intensity (in W/m ) at a distance of 42.0 m, assuming the sound propagates as a spherical wave. W/m2 (c) Find the decibel level at a distance of 42.0 m. dB

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