A string is fixed at both ends. The wave speed on the string is 63.0 m/s. A particular standing wave harmonic on this string has frequency 1268 Hz and the next lowest harmonic has frequency 951 Hz. Beginning with basic symbolic equations (from the equation list), use these equations to find (a) the length of the string, and (b) which harmonic corresponds to frequency 1268 Hz. Explain all of your reasoning, as always.