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41 Cards in this Set
- Front
- Back
When two or more waves are simultaneously present at a single point in space, the displacement of the medium at that point is the sum of the displacements due to each individual wave |
Principle of SuperPosition |
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The superposition of two waves |
Interference |
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Occurs when both waves are positive and the total displacement of the medium is larger than it would be for either wave seperately |
Constructive Interference |
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When the displacement of the medium where the waves overlap is less than it would be due to either of the waves separately. |
Desrtructive Interference |
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Waves that are trapped and cannot travel in either direction |
Standing Waves |
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Individual points on a string oscillate up and down,but the wave itself does not travel |
Standing waves |
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Crest and troughs stand in place |
Standing Waves |
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Points that never move |
Nodes |
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Halfway between the nodes, where the particlea in the medium oscillate with maximum displacement |
Antinodes |
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The wavelength of a standing wave is twice the distance between successive nodes or antinodes |
Remember |
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The intensity is maximum at points of constructive interference and zero at points of destructive interference |
Remember |
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A wall or the thing is reflecting |
The boundary |
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The amplitude of a wavr reflected from a boundary is unchanged |
Remember |
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A point where there is a change in properties of the medium |
Discontinuity |
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n |
Number of segment |
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Helps quantify the number of possible waves in a standing wave m |
Mode number |
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A standing wave can exist on the string only its wavelength is one of the values given by this equation |
Remember |
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n or m = number of antinodes |
Remembee |
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Standing wave modes are frequencies at which the wave wabts to oscillate |
Resonances |
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First mode of stabdong wave mode |
Fundamental Frequency |
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Sequence of possible frequencies |
Harmonics |
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Frequency above fundamental frequency |
Higher Harmonics |
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Determines the perceived pitch |
Fundamental frequency |
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Determine the tone quality |
Higher harmonics |
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Boundary conditions of a standing sou d wave in a tube |
Open open Closed closed Open closed |
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Regions of higher pressure |
Compressions |
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Regions of lower pressure |
Rarefactions |
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Distinctive sound patterm whixh the ear hears a single tone that is modulated |
Beats |
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Difference between two ftequencies that differ slightly |
Beat frequency |
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Helps quantify the number of possible waves in a standing wave |
Mode number |
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Determins the pitch |
Frequency oscillation |
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Frequency of modulations |
Frequency beats |
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The superposition of two or more waves into a single wave |
Interference |
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Occurs when crests and creats are aligned and same with troughs and troughs align |
Constructive interference |
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When crest aligns with troughs |
Destructive interference |
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Allowed standing waves |
Modes of the syatem |
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De tree rmine which standing wave frequencies and ewavelengths are allowed |
Boundary conditions |
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Two identical traveling qaves moving in opposite directions |
Standing wave |
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Produced when two waves of slightly different frequencies are superimposed |
Beats |
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Determines pitc |
Fundamental frequency |
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Determine 4th e tone quality |
Higher harmonica |