A guitar string has a fundamental frequency of 300.0 Hz.
(a) What are the next three lowest standing wave frequencies?
(b) If you press a finger lightly against the string at its midpoint so that both sides of the string can still vibrate, you create a node at the midpoint. What are the lowest four standing wave frequencies now?
(c) If you press hard at the same point, only one side of the string can vibrate. What are the lowest four standing wave frequencies?