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A plane progressive wave is y=0.02 sin (...

A plane progressive wave is `y=0.02 sin (400 t-0.12 x)`. Calculate the following:
(i) amplitude of wave, (ii) frequency of wave, (iii) wavelength of wave, (iv) interval at which a compression follows a rerefaction, (v) velocity of the wave.
[Hint: compare this equation with the standard `y=a sin (2 pi nt-2pi x//lambda)`]

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