The vertical displacement of a string is given by y(x,t) = (6.00 mm) cos[(3.25 m-1)x - (7.22 s-1)t]. What is the period of the wave?
A)
7.22 s
B)
1.93 s
C)
0.870 s
D)
0.308 s
E)
0.139 s
C
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