Question

Two waves are traveling in opposite directions on the same
string. The displacements caused by the individiual waves are given
by *y*_{1}=(27.0 mm)sin(5.07*πt -*
1.72*πx*) and *y*_{2}=(38.0
mm)sin(2.14*πt* + 0.229*πx*). Note that the phase
angles (5.07*πt -* 1.72*πx*) and (2.14*πt* +
0.229*πx*) are in radians, *t* is in seconds, and
*x* is in meters. At *t* = 5.90 s, what is the net
displacement (in mm) of the string at **(a)**
*x* = 2.30 m and **(b)** *x* = 2.99 m?
Be sure to include the algebraic sign (+ or -) with your
answers.

Answer #1

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