Question

A travelling wave along the x-axis is given by the following wave function ψ(x, t) = 3.7 cos(1.6x-9.8t + 0.34), where x in meter, t in seconds, and ψ in meters. Read off the appropriate quantities for this wave function and find the following characteristics of this plane wave:

Part (a) The amplitude in meters

Part (b) The frequency, in hertz

Part (c) The wavelength in meters

Part (d) The ware speed, in meters per second