A sinusoidal wave is propagating along a stretched string that lies along the xaxis. The displacement of the string as a function of time is graphed in Fig.l5.30 for particles at x = 0 and at x = 0.0900m.
(a) What is the amplitude of the wave?
(b) What is the period of the wave?
(c) You are told that the two points x = 0 and x = 0.0900 m are within one wavelength of each other: If the wave is moving in the +xdirection, determine the wavelength and the wave speed.
(d) If instead the wave is moving in the xdirection, determine the wavelength and the wave speed.
(e) Would it be possible to determine definitively the wavelength in parts (c) and (d) if you were not told that the two points were within one wavelength of each other? Why or why not?

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