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A continuous sinusoidal longitudinal wave is sent along a very long coiled spring from an attached...

A continuous sinusoidal longitudinal wave is sent along a very long coiled spring from an attached oscillating source. The wave travels in the negative direction of an x axis; the source frequency is 24 Hz; at any instant the distance between successive points of maximum expansion in the spring is 20 cm; the maximum longitudinal displacement of a spring particle is 0.69 cm; and the particle at x = 0 has zero displacement at time t = 0. If the wave is written in the form s(x, t) = sm cos(kx ± ωt), what are (a) sm, (b) k, (c) ω, (d) the wave speed, and (e) the correct choice of sign in front of ω?

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