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11 2 3 4 5 6 7 8 9 10 11 12 13 14 15234567891011 12131415 IB WAVES SPECIAL

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A:B: FrequencyAngular frequency £100 The largest displacement of a wave is called the C:D: PhaseAmplitude

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Excellent!Excellent!

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Unlucky!Unlucky! That’s incorrect

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A:B: Rayphase £200 Perpendicular to the wavefront is the… C:D: Angle of incidenceRefractive index

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Excellent!Excellent!

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SorrySorry That’s incorrect …

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A:B: Amplitude Period £300 The shortest distance between parts of a wave that are moving in phase… C:D: WavelengthTuesday

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FantasticFantastic

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Oh dear! That’s incorrect …

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A:B: 2πf2πf2π/f £500 Angular frequency (ω) = C:D: f/2π2πf22πf2

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BrilliantBrilliant

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SorrySorry That’s incorrect …

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A:B: Transverse waves Stationary waves £1,000 When are oscillations are parallel to the direction of energy transfer? C:D: Simple harmonic motion Longitudinal waves

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Well done!

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Unlucky!Unlucky! You should know this!

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A:B: Gamma rays X - rays £2,000 Wavelength of about 1 x 10 -10 m? C:D: Visible lightUltra-violet `

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Super!Super!

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Oh no! That’s incorrect !…

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A:B: (n + ½)λ½λ½λ £4,000 You get constructive interference when the path difference of 2 waves is… C:D: fλfλnλnλ

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Very good!

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IncorrectIncorrect So near and yet so far!

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A:B: x = ox = ω £8,000 The acceleration of a SHM oscillator is a maximum when … C:D: x = x o x = -ω 2 x o `

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Very good!

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Sorry!Sorry! That’s incorrect … I suck!

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A:B: 17791979 £16,000 When was Einstein born? C:D: 16791879

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Very good!

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UnluckyUnlucky That’s incorrect …

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Digestion A:B: x = 0 £32,000 For an object in SHM the velocity is a maximum when… C:D: x = ω Digestion x = fλ x = x o

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Brilliant!Brilliant!

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Unfortunately…Unfortunately… That’s incorrect ! I suck.

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A:B: Critical dampedOverdamped £64,000 A system makes several oscillations before coming to rest….. C:D: UnderdampedNatural frequency

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Well done!

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I’m sorry That’s incorrect …

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A:B: Forced vibrationsNatural oscillations £125,000 If a force is applied at a different frequency to the natural frequency we get C:D: Resonant oscillationsg/cm 3

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Very good!

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IncorrectIncorrect You should have got that one!

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A:B: Potential energyKinetic energy £250,000 ? = ½mω 2 x o 2 C:D: intensityTotal energy

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Excellent!Excellent!

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Wrong Choice! That’s incorrect … I suck.

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A:B: J.m -2 W.m -3 £500,000 Unit of wave intensity? C:D: W.m -2 Decibel

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Very Good!

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Sorry!Sorry! That’s incorrect … I suck.

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A:B: £ 1,000,000 Destructive interference occurs when the phase difference of two waves is C:D: π 2π2π π/4 π/2

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Fantastic!Fantastic!

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UnluckyUnlucky You were nearly a millionaire! I wished I was as clever and handsome as Mr Brockman.

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Mr Brockman thanks you for playing! Mr Brockman thanks you for playing! Go home and learn your definitions! Go home and learn your definitions!

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