waves

Question: The equation of a wave motion (with $t$ in seconds and $x$ in metres) is given by $y=7\sin \,\left[ 7\pi t-0.4\pi x+\frac{\pi }{3} \right]$. The velocity of the wave will be

1) $17.5$ m/s

2) $49\pi $ m/s

3) $\frac{49}{2\pi }m/s$

4) $\frac{2\pi }{49}m/s$

Solution:

Explanation: No Explanation

Progressive Waves

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