Question

The velocity of waves on a string is 90 m/s. if the frequency of standing waves is

Answer 1

Sorry but your question seems incomplete. ?..

Answer 2

Answer:

Explanation:

All points within one wavelength on a progressive wave have the same phase. Progressive waves don't transfer information, and have nodes that don't move. Stationary waves store energy in pockets. On progressive waves, all the points between nodes are in phase.