The tension in a string is 20.2 N, and its linear density is 0.915 kg/m. A wave on the string travels toward the −x direction; it has an amplitude of 3.63 cm and a frequency of 13.0 Hz. What are the (a) speed and (b) wavelength (in terms of m) of the wave? (c) Write down a mathematical expression (like Equation 16.3 or 16.4) for the wave, substituting numbers for the variables A, f, and λ. (a) Number i Units (b) Number Units (c) y = sin(*t ∗x)