3 A sound wave of wavelength 40 cm travels in air If the difference between...
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3 A sound wave of wavelength 40 cm travels in air If the difference between the maximum and minimum pressures at a given point is 10 x 10 Nm find the amplitude of vibration of the particles of the medium The bulk modulus of air is 1 4 x 105 Nm 2 Solution The pressure amplitude is 3 1 0 10 Nm 2 Po or The displacement amplitude so is given by Po B k so So Po Po Bk 2 T B 3 0 5 x 10 N m 40 10 m 2x3 14 x 14 x 105 Nm 2 2 2 x 10 0 5 10 Nm 10 m 10
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