Find the mean energy flow

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Q1. How long will it take sound waves to travel the distance l between the points A and B if the air temperature between them varies linearly from T1 to T2? The velocity of sound propagation in air is equal to v = α√T, where α is a constant.

Q2. A ball of radius R = 50 cm is located in the way of propagation of a plane sound wave. The sonic wavelength is λ = 20 cm, the frequency is ν = 1700 Hz, the pressure oscillation amplitude in air is (Δp)m = 3.5 Pa. Find the mean energy flow, averaged over an oscillation period, reaching the surface of the ball.

Reference no: EM132434092

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