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A sinusoidal wave propagates along a str...

A sinusoidal wave propagates along a string. In figure (a) and (b) 'y' represents displacement of particle from the mean postion. 'x' & 't' have usual meanings. Find :-
ltimg src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/ALN_PHY_R01_E11_010_Q01.png" width="80%"gt
ltimg src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/ALN_PHY_R01_E11_010_Q02.png" width="80%"gt
(a) wavelength, frequency and speed of the wave
(b) maximum velocity and maximum acceleration of the particles

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The correct Answer is:
(a)6m, 0.25 Hz, 1.5 m/s, (b)`1.5pi mm//s,0.75pi^(2) mm//s`
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