A wave is given by the equation $y ( x , t ) = 4.0 \cos ( 6 \pi x - 10 \pi t )$ m. The speed of the wave is
A) 20 m/s.
B) 15 m/s.
C) 12 m/s.
D) 3/5 m/s.
E) 5/3 m/s.

Question

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The Answer of A wave is given by the equation $y ( x , t ) = 4.0 \cos ( 6 \pi x - 10 \pi t )$ m. The speed of the wave is
A) 20 m/s.
B) 15 m/s.
C) 12 m/s.
D) 3/5 m/s.
E) 5/3 m/s.

A Wave Is Given by the Equation y(x,t)=4.0cos⁡(6πx−10πt)y ( x , t ) = 4.0 \cos ( 6 \pi x - 10 \pi t )y(x,t)=4.0cos(6πx−10πt)

A Wave Is Given by the Equation $y ( x , t ) = 4.0 \cos ( 6 \pi x - 10 \pi t )$