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Waves

Waves. Mechanical Waves EM Radiation (Light). Wave Characteristics Equations. Transverse : Longitudinal :. 1) Wavelength – 2) Amplitude – 3) Period – 4) Frequency – 5) Velocity – 6) Pulse – . Working with Wave Relationships.

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Waves

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  1. Waves Mechanical WavesEM Radiation (Light) Wave CharacteristicsEquations Transverse: Longitudinal: 1) Wavelength – 2) Amplitude – 3) Period – 4) Frequency – 5) Velocity – 6) Pulse –

  2. Working with Wave Relationships Statement: “A wave travels at a constant velocity in a given medium” Question: What is the relationship between wavelength and velocity? Bees vs. Mosquitos What is the period of vibration for each? Given the speed of sound in air, what is the wavelength of each sound wave? If the insects are each traveling at 2m/s towards each other and collide inelastically, what will be the final velocity of the system? f = 100Hz f = 600Hz m = 5X10-4kg m = 5X10-6kg

  3. Working with Wave Relationships What is the wavelength? If an observer notices that it takes 3 seconds for each wave crest to pass, what is the frequency of the wave? How fast is the ocean wave traveling? As the wave moves to the right, in which direction will point ‘P’ move?

  4. Wave Phenomena… I) Reflection – Standing Wave Rigid (Unyielding)_Body Non-Rigid (Yielding) Body Depth Finders use Sonar (developed during WWII) to determine what is below them by sending high frequency sound waves downward and tracks how long it takes for the wave to bounce back. If the speed of sound in water is 1484m/s, and it takes .02s for the sound wave to come back, how deep is the water? If the wavelength of the longitudinal sound waves used is .007m, what frequency does the Depth Finder send signals at?

  5. Wave Phenomena… II) Diffraction -

  6. Wave Phenomena… III) Interference - Phase- Principle of Superposition

  7. Superimposed Waves

  8. Wave Phenomena… III) Interference cont… Wave Fronts - Constructive or Destructive Interference? A B C D E F

  9. Wave Phenomena… IV) Doppler Effect – Redshift - Blueshift - Sonic Booms

  10. Wave Phenomena… IV) Resonance - When would you put energy into the system to get a larger amplitude? How does an opera singer break a crystal glass using her voice?

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