(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The equation describing a transverse wave on a string is

y(x,t) = (3.50mm)sin[(t/162s) - (x/42.5)]

Find the transverse displacement of a point on the string when t = 0.220 s and at a position x = 0.140m

2. Relevant equations

y(x,t) = Asin(wt-kx) or y(x,t) = Asin2pi[(t/T)-(x/wavelength)]

k = 2pi/wavelength

w = 2pif

3. The attempt at a solution

I know from previous parts of the problem that I got right:

wavelength = 0.148m

f = 1/T = 25.8 Hz

A = 3.5mm

I thought that you would just plug the values of t and x into the second equation I gave, but it was wrong. I keep on coming up with y = 1.73, no matter what I do, but the answer is y = -3,46. What am I doing wrong?

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# Homework Help: Displacement of a point on a string given t and x

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