61. At a distance r = 100 m from a point isotropic sour

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61. At a distance r = 100 m from a point isotropic source amplitude of the sound pressure p0 = 0,2 Pa. Determine the source of the power P, if the specific acoustic impedance of air is equal to Zs 420 Pa • s / m. The absorption of sound in air is not taken into account.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)


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