Problem: A particularly beautiful note reaching your ear from a rare Stradivarius violin has a wavelength of 39.1 cm. The room is slightly warm, so the speed of sound is 344 m/s.
Part A: If the string's linear density is 0.610g/m and the tension is 160N, how long is the vibrating section of the violin string?
I need help to find how long the vibrating section of the violin string.