Find the intensity of sound wave whose frequency is \( 250 \mathrm{...

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Find the intensity of sound wave whose frequency is \( 250 \mathrm{~Hz} \). The displacement amplitude of particles of the medium at this position is \( 1 \times 10^{-8} \mathrm{~m} \). The density of the medium is \( 1 \mathrm{~kg} / \mathrm{m}^{3} \), bulk modulus of
\( \mathrm{P} \) elasticity of the medium is \( 400 \mathrm{~N} / \mathrm{m}^{2} \).

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