1 / 9

PHY138 – Waves, Lecture 1 New Instructor for November and Demember: Jason Harlow

Dive into the basics of sound and light waves in this lecture by new instructor Jason Harlow. Explore how waves result from oscillations of molecules and fields, and how they carry energy. Learn about Hooke's Law for springs, simple harmonic motion, and more. Don't forget to complete the assigned readings and pre-class quiz for a deeper understanding.

cimino
Download Presentation

PHY138 – Waves, Lecture 1 New Instructor for November and Demember: Jason Harlow

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. PHY138 – Waves, Lecture 1New Instructor for November and Demember:Jason Harlow “Light is the only thing we see. Sound is the only thing we hear.” - Paul Hewitt

  2. Sound Waves result from periodic oscillations of air molecules, which collide with their neighbours and create a propagating disturbance.

  3. Electric and Magnetic fields, when oscillated, can create waves which carry energy. At the right frequency, we see electro-magnetic waves as Light.

  4. Reading Assignment Please read the following sections of Serway and Jewett before next class: Chapter 12, Sections 12.1-12.4, 12.7 Chapter 13, Sections 13.1, 13.2 A Web-CT pre-class quiz on Chapter 13 is due on Wednesday morning, which tests basic familiarity with Ch.13 material.

  5. PHY138 – Waves, Lecture 1Today’s overview • Hooke’s Law for Springs • Motion of a mass on a spring • Simple Harmonic Motion • Energy in S.H.M.

  6. Restoring Force provided by Hooke’s Law

  7. x P t A mass attached to a spring oscillates back and forth as indicated in the position vs. time plot above. At point, P, the mass has 1. positive velocity and positive acceleration. 2. positive velocity and negative acceleration. 3. negative velocity and positive acceleration. 4. negative velocity and negative acceleration. 5. positive velocity and zero acceleration.

  8. x,v,a for Simple Harmonic Motion

More Related