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A person standing 1.25 m from a portable speaker hears its sound at an intensity of 4.70 x 10-³ W/m². HINT (a) Find the corresponding decibel level. 96.721 ✔Don't confuse intensity with intensity level. Intensity is a physical quantity with units of watts per meter squared. Intensity level, or decibel le the logarithm of a ratio of intensities and gives an approximate measure of our perception of loudness. dB (b) Find the sound intensity (in W/m2) at a distance of 24.0 m, assuming the sound propagates as a spherical wave. 1.2749566 X W/m² (c) Find the decibel level at a distance of 24.0 m. -48.945 XdB

A person standing 1.25 m from a portable speaker hears its sound at an intensity of 4.70 x 10-³ W/m². HINT (a) Find the corresponding decibel level. 96.721 ✔Don't confuse intensity with intensity level. Intensity is a physical quantity with units of watts per meter squared. Intensity level, or decibel le the logarithm of a ratio of intensities and gives an approximate measure of our perception of loudness. dB (b) Find the sound intensity (in W/m2) at a distance of 24.0 m, assuming the sound propagates as a spherical wave. 1.2749566 X W/m² (c) Find the decibel level at a distance of 24.0 m. -48.945 XdB

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A person standing 1.25 m from a portable speaker hears its sound at an intensity of 4.70 x 10-³ W/m². -3 HINT (a) Find the corresponding decibel level. 96.721 Don't confuse intensity with intensity level. Intensity is a physical quantity with units of watts per meter squared. Intensity level, or decibel level, is based on the logarithm of a ratio of intensities and gives an approximate measure of our perception of loudness. dB (b) Find the sound intensity (in W/m²) at a distance of 24.0 m, assuming the sound propagates as a spherical wave. 1.2749566 X W/m² (c) Find the decibel level at a distance of 24.0 m. -48.945 X dB Need Help? Read It Watch It
Transcribed Image Text:A person standing 1.25 m from a portable speaker hears its sound at an intensity of 4.70 x 10-³ W/m². -3 HINT (a) Find the corresponding decibel level. 96.721 Don't confuse intensity with intensity level. Intensity is a physical quantity with units of watts per meter squared. Intensity level, or decibel level, is based on the logarithm of a ratio of intensities and gives an approximate measure of our perception of loudness. dB (b) Find the sound intensity (in W/m²) at a distance of 24.0 m, assuming the sound propagates as a spherical wave. 1.2749566 X W/m² (c) Find the decibel level at a distance of 24.0 m. -48.945 X dB Need Help? Read It Watch It
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