Help needed urgently!!! Question A string vibrates according to the equation: y=0.6sin px/4 cos 45pt p = pi , x and y = cm , t=s (i) what are the amplitude and velocity of the component wave given rise to this vibration? (ii) what is the distance between nodes? (iii) what is the velocity of a particle of the string at the position x= 2cm and y=3s? Any help or ideas would be greatly appreciated!!!!!