A sinusoidal wave travelling in the positive x direction has an amllplitude of 15.0 cm, a wavelength of 40.0 cm, and a frequency pf 8.00 Hz. The vertical position of an element of the medium at t=0 and x =0 is also 15.0 cm.
A. Find the wave number k, period T, angular frequency w, and speed v of the wave
B. Write a general expression for the wave function
Let's denote: is the amplitude, is the wavelength, is the frequency.
The wave number is given as:
The angular frequency is:
The speed is:
The general expression for the wave is:
Answer. A) , B) .
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