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Conceptual Physics Alive: Vibrations & Sound 2

Item # 99-0260

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Master teacher Paul Hewitt explains reflection, refraction, and speed of sound waves.

Please note: The digital content will be sent to the email provided during checkout, once your order has been processed. Order will be processed no later than the next business day.
Digital format: The email you will receive will contain a hyperlink to download a .ZIP file containing a digital video (.MP4) and questions set with answers (.PDF).
Notice: This digital content can be used in physical or remote classroom settings (e.g., Google Classroom, Canvas, etc.), or Homeschool. Replicating and distributing this digital content for profit without the authority of the copyright owner is an infringement of the copyright.
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Additional Details

Conceptual Physics Alive: Vibrations & Sound 2 includes a digital video and questions set with answers.

Observe Paul Hewitt teach in a classroom with real students, using engaging demonstrations and artwork. In this video, Paul Hewitt explains reflection, refraction, and speed of sound waves. A discussion of forced vibrations and resonance culminates with exciting historical footage of the collapse of the Tacoma Narrows Bridge in 1940. Segment length: 43 minutes

Vibrations & Sounds 2 Includes:

  • Hewitt begins with a chalkboard discussion of the waves generated by a bug that bobs up and down on a smooth surface of water.
  • Doppler effect.
  • Bow wave.
  • Shock wave and sonic boom.
  • Mach numbers and the speed of sound.
  • Bullets, shock waves, and mini sonic booms.
  • Crack of a circus whip; a mini sonic boom.
  • Speeds of sound in air, water, and steel compared.
  • Ultrasound and its application for medical use.
  • Dolphins and ultrasound.
  • The molecule-to-molecule conduction of sound.
  • Sound propagation, density, and elasticity.
  • Sound refraction.
  • Interference of sound and its application to tomorrow's jackhammers.
  • Demonstration of tuning forks.
  • Demonstration of a music box piece that sounds louder when pressed against a sounding board.
  • Forced vibration.
  • Resonance.
  • Examples of resonance; kid on a swing in Golden Gate Park, loose front end of Hewitt's car, radios on glass shelves, hotel balcony collapse, bridge collapse.
  • Hewitt's story (with lies!) of the devastating effect a cat would have on the George Washington Bridge in New York.
  • Footage of the famous 1940 Tacoma Bridge collapse ends the lecture. Hewitt continues spoofing about a cat causing the collapse, then directs his class to look in his textbook for a better explanation [of wind-generated resonance].

Please note: The digital content will be sent to the email provided during checkout, once your order has been processed. Order will be processed no later than the next business day.

Digital format: The email you will receive will contain a hyperlink to download a .ZIP file containing a digital video (.MP4) and questions set with answers (.PDF).

Notice: The Conceptual Physics Alive Digital content is protected by copyright laws. Replicating and distributing this digital content without the authority of the copyright owner is an infringement of the copyright. This digital content can be used in physical or remote classroom settings (e.g., Google Classroom, Canvas, etc.), or Homeschool.

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