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The equation of a sound wave in air is given by p=(0.01 N m−2) sin [(1000s−1) t−(3.0 m−1)x] (a) Find the frequency, wavelength and the speed of sound wave in air. (b) If the equilibrium pressure of air is 1.0×105 N m−2, what are the maximum and minimum pressures at a point as the wave passes through that point. (i) 2.1(p)frequency in Hz(ii)1.0×105+0.01 (q)wavelength in m(iii)333(r) speed in m/s(iv)160(s)Max p in Nm−2 |
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Answer» The equation of a sound wave in air is given by p=(0.01 N m−2) sin [(1000s−1) t−(3.0 m−1)x] (a) Find the frequency, wavelength and the speed of sound wave in air. (b) If the equilibrium pressure of air is 1.0×105 N m−2, what are the maximum and minimum pressures at a point as the wave passes through that point. (i) 2.1(p)frequency in Hz(ii)1.0×105+0.01 (q)wavelength in m(iii)333(r) speed in m/s(iv)160(s)Max p in Nm−2 |
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