1 / 12

Ch. 13

Ch. 13 . Sound. Sound Intensity. Intensity – the rate of energy flow through a given area. Units for Power – watt (W) Units for distance – meter (m) Units for intensity – watts per meters squared (W/m 2 ). Sound Intensity.

zagiri
Télécharger la présentation

Ch. 13

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ch. 13 Sound

  2. Sound Intensity • Intensity – the rate of energy flow through a given area

  3. Units for Power – watt (W) • Units for distance – meter (m) • Units for intensity – watts per meters squared (W/m2)

  4. Sound Intensity • Intensity and frequency determine which sounds are audible • Threshold of Hearing – softest sounds heard by humans • Threshold of Pain – loudest sounds human ears can tolerate

  5. Sound Intensity • Decibel level – relative intensity, measured in decibels (dB)

  6. Resonance • Resonance – when the frequency of a force applied to an object matches the object’s natural frequency

  7. Tacoma Narrows Bridge Collapse

  8. Human Ear • The ear transmits vibrations that cause nerve impulses

  9. What is the intensity of the sound waves produced by a trumpet at a distance of 3.2 m when the power output of the trumpet is 0.20 W?

More Related