A Longitudinal Wave Is Represented by the Equation Z(z,t) =

A longitudinal wave is represented by the equation z(z,t) = -2.0 cm sin(1,200 rad/s t - 20 m^-1 z) .Another longitudinal wave is represented by the equation z(z,t) = +2.0 cm sin(1,200 rad/s t + 20 m^-1 z) .What is the equation that represents the superposition of the two waves?

A) z(z,t) = +4.0 cm cos(1,200 rad/s t) cos(20 m^-1 z) .
B) z(z,t) = +4.0 cm cos(1,200 rad/s t) sin(20 m^-1 z)
C) z(z,t) = +4.0 cm cos(1,200 rad/s t) cos(20 m^-1 z)
D) z(z,t) = -2.0 cm cos(1,200 rad/s t) sin(20 m^-1 z)

Correct Answer:

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