At t=0, a wave disturbance has the waveform that is shown in a figure. The wave has a velocity of 500.0 m/s to the left. What's the values for k and ω if the wave equation is to be written in the form:
y(x,t)=A cos(kx±ωt+φo).
What is the value for k, and ω?
The image is at
s3.amazonaws com/answer-board-image/7f3d4261-c389-44c9-b71b-c9ea27b7b25e.jpeg
From the picture, the wavelength seems to be 15m. I notice the formula for the wave number is k = 2pi / lambda which should give me 0.4189 rad/m but it doesn't seem like it's correct.
ω could be found from using the formula ω = vk (500 times .4189) = 209.45 rad/s but again, it doesn't seem like it's correct. What is wrong here?
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