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Physics > Waves > Flashcards

Waves Flashcards

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1
Q

Transverse wave

A

Particle oscillations are perpendicular to direction of wave

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2
Q

Crests

A

Points with maximum vertical displacement above horizontal

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3
Q

Troughs

A

Points with maximum vertical displacement below horizontal

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4
Q

Wavelength

A

Length of one wave, distance between 2 adjacent Crests (or troughs)

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5
Q

Amplitude

A

Maximum displacement from horizontal equilibrium position

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6
Q

Period

A

Time for one complete vertical oscillation

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7
Q

Frequency

A

Number of cycles wave completes in 1 second

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8
Q

Wave Rule #1

A

All waves of same type in same medium have the same speed

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9
Q

Wave Rule #2

A

When a wave passes into a new medium, its frequency stays the same

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10
Q

Constructive interference

A

If 2 waves have displacement of same sign when they overlap, the combined wave will have a displacement of greater magnitude than either individual wave

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11
Q

Destructive interference

A

If waves have opposite displacements when they meet, the combined waveform will have a displacement of smaller magnitude than either individual wave

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12
Q

In phase

A

If crest meets crest & trough meets trough, waves will constructively interfere
Amplitude of combined wave will be sum of individual amplitudes

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13
Q

Out of phase

A

If crests meets trough & trough meets crest, waves will destructively interfere
Amplitude of combined wave will be the difference between individual amplitudes

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14
Q

Standing wave

A

When 2 oppositely traveling waves that have same f, A & y oscillate vertically & remain fixed

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15
Q

Nodes

A

Points where 2 traveling waves destructively interfere

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16
Q

Antibodies

A

Points where 2 traveling waves constructively interfere

17
Q

Sound waves

A

Produced by vibration of an object, vibrations cause pressure variations in conducting medium

18
Q

Compressions

A

Where molecules are bunched together (pressure is above normal)

19
Q

Rarefactions

A

Positions where pressure is below normal

20
Q

Longitudinal waves

A

Particle oscillations are parallel to direction of wave

21
Q

Beat

A

When 2 sound waves whose frequencies are close but no identical interfere, by superposition, waves interfere constructively, then destructively…

22
Q

Doppler effect

A

Shift in frequency that occurs when the source & detector are in relative motion

Physics (15 decks)

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