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3. The following plots show a one dimensional harmonic wave at two different moments in time:
f (cm)
f vs x, t = 0
4
2
-2
-4
f (cm)
4
2
?
0.5
0.5
1.5
1.5
2
f vs x, t = 5 s
2
2.5
2.5
3
3
3.5
3.5
4
4
x (m)
x (m)
Are you able to determine the direction in which the wave travels? Why or why not? What information would allow you
to determine the wave's direction?

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