A progressive and a stationary simple harmonic wave each has the same frequency of250 Hz, and the same velocity of30 m/s. Calculat
(0 the phase difference between two vibrating points on the progressive wave which are 10 cm apart,
(ii) the equation of motion of the progressive wave if its amplitude is 0.03 m
(iii) the distance between nodes in the stationary wave
(iv) the equation ofmotion, the stationarywave if its amplitude is 0.01 m.