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Wednesday, July 23, 2008

Guidelines Superposition 1, 2.1, 2.2, 2.4

Section 1: Principle of Superposition
Key Definition: What is the principle of superposition?
[All the diagrams are just illustrations]

Section 2.1
What is the conditions for the formation of stationary waves?

Section 2.2
- What is a node/antinode?
- [no sign of progressive wave is kind of obvious]
- how do you determine the wavelength of a stationary wave?
- how do particles behave in between two nodes?
- When is the amplitude maximum? Zero?
- [the part about equal segments is also obvious]
- How do particles on the left of a node compare to particles on the right of the same node?

Section 2.4
- What is an example of stationary transverse waves?
- How is a stationary wave set up in the string?
- What are the boundary conditions for a vibrating string?
- What is fundamental frequency?
- [Ignore the statement that says that "A harmonic is a note whose frequency...". We have decided to discourage the use of the word "harmonic", as it means different things in Physics and in Music terminology. Instead, use the word "mode"]
- Can you sketch the lowest 3 modes of the vibrating string?
- Can you determine the wavelength of these 3 modes?

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