A Transverse Periodic Wave Is Represented by the Equation Y(x,t)

A transverse periodic wave is represented by the equation y(x,t) = 2.50 cm cos(2,500 rad/s t - 15.0 m^-1 x) .What is the k vector of the wave?

A) 15.0 m-¹ in the - x direction
B) 15.0 m^-1 in the + x direction
C) 30.0 m^-1 in the + y direction
D) 30.0 m^-1 in the - y direction
E) 45.0 m^-1 in the + x direction

Correct Answer:

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