A sinusoidal wave is traveling on a string with speed 745

Question

A sinusoidal wave is traveling on a string with speed 74.5 cm/s. The displacement of the particles of the string at x = 17 cm is found to vary with time according to the equation

y = (3.2 cm) sin[1.3 - (5.7 s^-1)t].

The linear density of the string is 2.1 g/cm. What are (a) the frequency and (b) the wavelength of the wave? If the wave equation is of the form y(x,t) = y_m sin(kx - ωt), What are (c) y_m, (d) k, and (e) ω, and (f) the correct choice of sign in front of ω? (g) What is the tension in the string?

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