5.3 - Interacting Waves by Huda Obied

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Fixed End

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Free End

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The phenomenon in which two or more waves overlap to form a resultant wave of greater, lower or the same

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1. Vibrational pattern created within a medium when the vibrational frequency of the source causes reflected waves from one end of the medium to interfere with incident waves from the source

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2. Combination of two waves moving in opposite directions, each having the same amplitude and frequency , and wavelength. The wave appears to be stationary

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A standing waves consists of nodes and antinodes

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A standing wave is created by a wave and its reflection but only at frequencies where each end of a rope has a node.

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The first mode of vibration (1st harmonic) is formed by a wave that reflects back and forth between the fixed ends of a string.

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The pattern continues with more nodes and antinodes as the harmonic number increases.

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Second harmonic

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Third harmonic

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The speed of a wave depends on the tension of the string, as well as its mass per unit length (μ)

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per unit length (μ)

The tighter the string, the faster the wave moves along it, and therefore,

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the higher the frequency of its standing waves.

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Wavefront

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This is an imaginary surface that we draw to represent the vibrating part of a wave.

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ripple tank

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Harmonic -The set of all possible standing waves

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Harmonic-The set of all possible standing waves

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