2. slide 4 (wavelength and frequency)
3. slide 13 (direction of traveling wave)
4. slide 39 (energy and power in string wave -pulse)
5. slide 42 (energy and power in string wave)
6. slide 50 (principle of superposition)
7. slide 51 (interference of waves)
9. slide 65 (standing waves - derivation)
10. slide 67 (positions of nodes)
11. slide 68 (positions of antinodes)
12. slide 68a (positions of nodes/antinodes)
13. slide 69 (standing wave forming from an incident wave interfering with the reflected wave)
14. slide 70 (Reflection of a pulse on hitting a hard/soft boundary)