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Eq: D(x,t) = 2.4sin(0.60x)cos(42t) where x and D are in cm and t is in sec.
a) what is the distance between nodes?
b) give the amp, frequency, and speed of the component waves.
c) find the speed of a light bead attached to the string at x = 3.20 cm and t =2.5 sec.
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