A stationary wave is given by y = 5 si...

A stationary wave is given by
`y = 5 sin (pi x)/( 3) cos 40 pi t`
where `x and y` are in `cm and t` is in second.
a. What are the amplitude and velocity of the component wave whose superposition can give rise to this vibration ?
b. What is the distance between the nodes ?
c. What is the velocity of a particle of the string at the position ` x = 1.5 cm when t = 9//8 s`?

1.5cm

3cm

6cm

4cm

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