12 Waves 2 Flashcards

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1
Q

Superposition

A

When two waves overlap (superpose) they produce a single wave whose instantaneous displacement can be found using the principle of superposition of waves

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2
Q

The principle of superposition

A

When two waves meet at a point the resultant displacement at that point is the sum of the displacements of the individual waves.

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3
Q

Interference

A

Two progressive waves continuously pass through each other they superpose producing a resultant wave

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4
Q

What is the relationship between intensity and amplitude

A

Intensity is directly proportional to amplitude ^ 2

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5
Q

Coherence

A

Wave emitted from two sources having a constant phase difference they must have the same frequency

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6
Q

Lambda = (ax)/D

A

Wavelength = (distance between slits x distance between 2 fringes) / distance between slits and interference pattern

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7
Q

Node

A

Where displacement, amplitude and intensity are 0

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8
Q

Antinode

A

Where amplitude and intensity are at its greatest

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9
Q

Stationary wave

A

Made from two progressive waves with the same wavelength and ideally amplitude moving in the opposite directions and are superposed. Their net energy transfer is 0

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10
Q

What phase are two particles on two different sides of a node

A

Antiphase

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11
Q

Wavelength of stationary waves

A

Twice the distance between adjacent nodes

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12
Q

Fundamental frequency (f0)

A

The minimum frequency of a stationary wave for a string

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13
Q

Stationary waves at an open end of a tube

A

Anti node

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14
Q

Stationary wave at a closed end of a tube

A

Node

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