A wave is represented by the equetion `y=7 sin(7pi t-0.04pix+(pi)/(3))` x is in metres and t is in seconds. The speed of the wav

A wave is represented by the equetion
`y=7 sin(7pi t-0.04pix+(pi)/(3))`
x is in metres and t is in seconds. The speed of the wave is
A. 175 m/sec
B. 49 `pi` m/sec
C. 49/`pi` m/sec
D. 0.28 `pi` m/sec

A wave is represented by the equetion `y=7 sin(7pi t-0.04pix+(pi)/(3))` x is in metres and t is in seconds. The speed of the wave is

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