A traveling plane wave propagates in the positive direction of the z axis according to the expression y(z,t) =(0.50 m) cos(3πz - 10πt + π/4) where z is measured in meters and t in seconds. For this wave determine: a) The wavelength b) The frequency of the wave. c) The speed of propagation of the wave. d) The initial phase angle of the wave.

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Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.