D Question 4 1 pts A displacement standing wave for sound inside a pipe is shown in the following figure. The left end of the pipe is at * = 0 and the right end of the pipe is at a = L. What type of pipe is this? [ Select ] The speed of sound is 340 m/s. The length of the pipe is L = 0.80 m. What is the wavelength [ Select ] and frequency [ Select ] of the standing wave? D X