1/ Use the expressions for frequency of the various modes.
2/ Explain the phenomenon of resonance. Use the phase of the interfering waves to determine the conditions for and location of constructive and destructive resonance.
3/ Explain the role of resonance in excitation of normal modes. Explain the role of pressure and displacement in a sound wave.
4/ Explain the phase difference between pressure and displacement values in a travelling sound wave.
5/ Explain the ways in which loudness, pitch and timbre affect the perception of sound.