Two waves in a long string have wave functions given by
y1 = (0.015 0 m) cos (x/2 ─ 40t)
And
y2 = (0.018 0 m) cos (x/2 + 40t)
Where y1, y2, and x are in meters and t is in seconds.
(a) Determine the positions of the nodes of the resulting standing wave.
(b) What is the maximum transverse position of an element of the string at the position x = 0.400 m?