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

question 45

Multiple Choice

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)

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