A sonar system is used in a marine expedition to take data on the underwater acoustics of an interesting rock formation. It is observed that a cylindrical cavity of this rock formation resonates to a frequency known as "concert A" or 440 Hz. As the tuner is adjusted, the next higher frequency at which resonance is observed is 616 Hz. The speed of sound in seawater at this location is given as 1500 m/s. Based upon this information, answer the following questions.

What is the fundamental frequency of the cavity?

What harmonic is 440 Hz? Show how you arrived at this conclusion.

What is the length of the cavity?

Does the cavity go all the way through the formation or is there a solid bottom? Explain.