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Hertz's Observations

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Displacement realation in a progressive wave

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Q. Displacement relation InIa progressive prog

The displacement time equation for a plane progressive wave is $y = 0.04 sin \frac{8 π}{3} (330 t - x)$ cm. Find phase velocity of the wave.

Q. The equation of a longitudinal standing wave due to superposition of the progressive waves produced by two sources of sound is

s = - 20 sin (10 π x) \times sin (100 π t)

s

is the displacement from mean position measured in

m m, x

is in meters and

t

is in seconds. The specific gravity of the medium is

10^{- 3}

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= 10^{3} k g / m^{3}

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