# Shared Flashcard Set

## Details

Week 1
Waves (Basic)
14
Physics
06/25/2013

Term
 What is superpositioning of waves?
Definition
 When 2 waves collide, they can constructively or destructively interfere (merge).
Term
 When 2 waves superposition and pass through each other, what happens to them? IE, are they preserved in their original forms, and if not, what do they look like?
Definition
 The waves after superpositioning return to their "original" forms. They essentially pass through each other unchanged (sans the new wave created by superpositioning).
Term
 When you double the amplitude of a wave, do the peaks, the troughs, or both, double?
Definition
 Both! Keep this in mind while drawing.
Term
 What is mu?
Definition
 Mass/length
Term
 How do you calculate wave velocity in a stretched string?
Definition
 Square root of tension divided by mu (mass/length).
Term
 What is one generally important assumption that must be made/has to be present for one to do very easy/basic superpositioning two waves (has to do with frequency/wavelength)?
Definition
 The frequency/wavelength of the superpositioned waves must be the same for very easy superpositioning.
Term
 Formula for total amplitude of the superpositioning of two waves, with amplitudes a and b
Definition
 total amplitude=a+b
Term
 Separation between nodes (or antinodes) formula
Definition
 lambda/2
Term
 To calculate where nodes are, set amplitude to what value and solve?
Definition
 Set amplitude to 0 (that's where nodes are)
Term
 Velocity's relationship to wavelength and frequency
Definition
 V=f*lambda
Term
 For a STANDING WAVE ON A STRING, what is the formula for wavelength (using L and m)
Definition
 lambda=2L/m
Term
 What does m stand for and what does it mean?
Definition
 M stands for "mode" and seems to be the wave's "structure" (allowed forms).
Term
 What is the difference between mode and node?
Definition
 Mode is the overall shape/form, nodes are where the amplitude of the wave(s) is 0.
Term
 In a fixed box, can you have non-integer numbers of nodes in a wave?
Definition
 No
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