As a young P. walkeri matured, the air passages in its crest might increase in length from 1.5 m to 2.7 m, causing a decrease in the standing wave frequencies. Referring to Figure 14-54, do you expect the change in the fundamental frequency to be greater than, less than, or equal to the change in the second harmonic frequency?

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4 5 6 7 8 9 10 1 2 3 350 Third harmonic 300 Second harmonic Fundamental 250 200 150 100 50 3 2 Length (m) Frequency (Hz) 4.