A 3.25 m lоng string is fixed аt bоth ends аnd tightened until the wаve speed is 52.5 m/s. a. What is the mоde number? [mode] For parts b, c, and d, using three significant figures, type both the number and the units into the answer box. Show all of your work. b. What is the frequency of the standing wave shown in the figure? [frequency] b. What is its wavelength of the wave shown in the figure? [wavelength] c. What is its fundamental frequency? [fundamental]