A 0.341-g wire is stretched between two points 56.6 cm apart. If the tension in the wire is 578 N, find the frequencies of the wire's (a) first, (b) second, and (c) third harmonics. For the first harmonic, the length of the wire is a half wavelength. (a) Frequency of the first harmonic. This corresponds to the standing wave with the lowest possible frequency on the wire. Hz ( + 20 Hz) (b) Frequency of the second harmonic. Hz ( + 20 Hz) (c) Frequency of the third harmonic. Hz ( + 20 Hz)