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The equation of a wave motion (with t in seconds and x in metres) is given by $y = 7 \sin [7 πt - 0 .4 πx + \frac{π}{3}]$ . The velocity of the wave will be

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17.5 m/s

49πm/s

492πm/s

2π49m/s

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detailed solution

Correct option is A

v=ωk=7π0.4π=17.5m/s

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The equation of a wave motion (with t in seconds and x in metres) is given by y=7sin 7πt−0.4πx+π3. The velocity of the wave will be

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The equation of a wave motion (with t in seconds and x in metres) is given by $y = 7 \sin [7 πt - 0 .4 πx + \frac{π}{3}]$ . The velocity of the wave will be