A 1kHz plane wave in water of 50 Pa effective (rms) pressure is incident normally on the water-air boundary. (a) What is the effective pressure of the plane wave transmitted into the air? (b) What is the intensity of the incident wave in the water and of the wave transmitted into the air? (c) Express, as a decibel reduction, the ratio of the intensity of the transmitted wave in air to that of the incident wave in water. (d) Answer the same three questions for the above sound wave incident on a thick layer of ice. (e) What is the power reflection coefficient from the layer of ice?
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I think answer of this question is electric
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(a) 0.0281 Pa
(b) 1.69, 1.9 µ W/m²
(c) 29.5 dB
(d) 66.5 Pa, 1.5 m W/m², 0.5 dB
(e) 0.109
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