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1/ Use the principle of superposition and the boundary conditions for a stretched string with a fixed or free end to explain the form of reflected pulses.

2/ Describe standing waves on a stretched string, recognising nodes and antinodes, and the relation to superposition of two travelling waves.

3/ Explain and use the mathematical expression for a standing wave.

4/ Describe the basis for production of normal vibration modes of a stretched string or an air column.

5/ Explain the terms fundamental, harmonics, overtones.

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