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a) A standing wave is described by the expression: Z(x,t)=6sin(x/2)Cos((40pi)t) Find the amplitude, frequency, wavelength, velocity and direction of the two component waves whose superposition results in the above standing wave.

b) Standing waves are formed by the superposition of the wave Y(x,t) = 5sin(20pi(t)+35x) and its reflection. write down the expression for the standing waves.

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