1. The problem statement, all variables and given/known data

The function y(x, t) = Asin(kx−ωt+ϕ) where x is in metres and t in seconds for
(a) tp = 3.5 s and (b) xp = 3.7m

3. The attempt at a solution

I don’t even know where to begin.

I know λ = 2pi/k

this is really disorienting. In the first graph, I’m given t = 3.5.
A = 3
y(x,t) = 3sin(kx-3.5ω)

In the second graph, y(x,t) = 3sin(3.7k – ωt)

Really, I don’t know how should I get started and I’m really frustrated.

I’m asked to find the wavelength. Is it 7m based off the first graph or do I have to utilize t = 3.5 and x=3.7?

Attached Images
File Type: png Capture.PNG (32.1 KB)


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