Parasaurolophus was a dinosaur whose distinguishing feature was a hollow crest on the head. The 1.

Parasaurolophus was a dinosaur whose distinguishing feature was a hollow crest on the head. The 1.5m long hollow tube in the crest had connections to the nose and throat, leading some investigators to hypothesize that the tube was a resonant chamber for vocalization. If you model the tube as an open- closed system, what are the first three resonant frequencies?