# Answer to Question #61829 in Other Physics for DEVENDRA SINGH

Question #61829

a) i) A sound wave of frequency 166 Hz travels with a speed 332 ms−1 along positive

x-axis in air. Each point of the medium moves up and down through 5.0 mm.

Write down the equation of the wave and calculate the (i) wavelength, and (ii)

wave number. How far are points which differ in phase by 45°?

ii) Derive expression for average rate at which energy is transported by a progressive

wave propagating in a medium.

x-axis in air. Each point of the medium moves up and down through 5.0 mm.

Write down the equation of the wave and calculate the (i) wavelength, and (ii)

wave number. How far are points which differ in phase by 45°?

ii) Derive expression for average rate at which energy is transported by a progressive

wave propagating in a medium.

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