A progressive wave travelling along a string has maximum amplitude A = 0.0821 m, angular frequency w = 100 rad/s and wave number k = 22.0 rad/m. If the wave has zero amplitude at t = 0 and x = 0 for its starting conditions (i) State the wave function that represents the progressive wave motion for this wave travelling in the negative xdirection. (ii) State the wave function for this wave travelling in the positive xdirection. (iii) Find the wavelength (L), period (T ) and the speed (v) of this wave. (iv) Find its amplitude at a time t = 2.5 s at a distance x = 3.2 m from its origin, for this wave travelling in the negative xdirection.
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