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The sound from a busy highway contains a 500 Hz Fourier component whose power at the...

The sound from a busy highway contains a 500 Hz Fourier component whose power at the highway is 1.5 ✕ 10−6 watt/m. (Ignore sound interactions with the ground).

(a)

What are the sound intensity (in W/m2),the sound intensity level (in dB) and the loudness (in phon) of that Fourier component at a distance of 57 m from the highway?

intensity W/m2

intensity level dB

loudness phon

(b)

What are the sound intensity (in W/m2), the sound intensity level (in dB) and the loudness (in phon) of that Fourier component at a distance of 114 m from the highway?

intensity W/m2

intensity level dB

loudness phon

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