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`?
A. 1.5cm
B. 3cm
C. 6cm
D. 4cm
