at-20-m-from-a-portable-generator-the-sound-intensity-is-2-x-10-4-w-m2-the-permi

Question

At 20 m from a portable generator, the sound intensity is 2 × 10^-4 W/m². The permissible noise intensity limit during the night is 0.5 μW/m². i) At what distance from habitation should the generator be placed? ii) Calculate the intensity experienced by a person living at a distance twice the minimum distance. iii) What power of sound does the generator produce?

Accepted Answer

i) 400 m ; ii) 1.25 × 10^-7 W/m² ; iii) 1 W

Answer

i) 40 m ; ii) 3 × 10^-10 W/m² ; iii) 0.5 W

Answer

i) 400 m ; ii) 3 × 10^-10 W/m² ; iii) 0.5 W

Answer

i) 400 m ; ii) 1.25 × 10^-7 W/m² ; iii) 0.5 W

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