PHY138

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PHY138 Waves, Lecture 1New instructor for
November and December!!! Jason HarlowOffice
MP 251-A
Email
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Sound Waves result from periodic oscillations of
air molecules, which collide with their
neighbours and create a propagating disturbance.
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Electric and Magnetic fields, when oscillated,
can create waves which carry energy. At the
right frequency, we see electro-magnetic waves as
Light.
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Reading Assignment

• This weeks reading assignment from the text by
  Knight is Chapter 14, Sections 14.1-14.8
• There is a Problem Set due Friday on this
  material online at www.masteringphysics.com .
• Suggested Chapter 14 Exercises and Problems for
  Study and Practice 13, 17, 23, 33, 51, 55, (77)

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PHY138 Waves, Lecture 1Todays overview

• Oscillations Repeating Motion
• Simple Harmonic Motion
• Oscillations / Circular Motion Connection
• Potential and Kinetic Energy in Oscillations

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Oscillations that are not sinusoidal
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Sinusoidal oscillations Simple Harmonic Motion
(SHM)
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equilibrium
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K.E., Potential Energy and Total Mechanical
Energy for SHM.