his is for physlet physics problem $18\mathrm{.}12$ help me solve this: This animation shows a standing wave in an open pipe $($position is given in centimeters and time is given in seconds$).$ Restart. In which harmonic, n$,$ is the air in the pipe oscillating? Determine the frequency of the musical tone produced by the pipe in this situation. Determine the fundamental frequency of the pipe $($lowest frequency of resonance$).$