90cm / 1.69s = 53.3cm/s (3sf)
Velocity of wave pulse is 53.3cm/s
b)Yes, it is possible to change the speed of the wave pulse (of the same width).
The increase in amplitude causes the amplitude of the wave to increase. X
The increase in pulse width causes the pulse width to increase. X
The increase in damping will cause the wave to lose energy and return to rest position. X
The decrease in tension ill cause the speed of the wave to decrease. √