Lect21-ch11ch12_2

Lect21-ch11ch12_2 - L21Ch11Ch12 L5Ch4 PHY 2053C College...

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1 1 PHY 2053C – College Physics A Spring 2004 Today: Wave Motion Energy in waves Wave speed Resonances, standing waves Sound & Harmonics Resonance, harmonics String and wind instruments Mot i on , For c e s, Energy Heat Wave s Dr. David M. Lind Dr. Kun Yang Dr. David Van Winkle L5—Ch4 L21—Ch11Ch12 1 Announcements (repeat) Next week: review for final Monday ch.9-15: will include CAPA discussion : Wednesday: Mini Exam #7, Friday ch.1-8. Enjoy your Thanksgiving Holiday !!!! The final exam will be held: Wednesday, December 8 at 10:00-12:00 , and is scheduled for 275 Fisher Lecture Hall, not in our current classroom! ! The final exam will be comprehensive , and we next week. Labs will be held next week, not this week.
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2 1 Important Points from last Lecture Simple Harmonic Oscillator is a consequence of The Period T is Pendulum: Damped Oscillations: F k x T 2 m k , f 1 T 1 2 k m T 2 l g , f 1 T 1 2 g l Shock absorbers: 1 Waves Waves are “ moving oscillations ”. They carry energy ; they do NOT carry matter (Think of water waves) Wavelength , l : length of one full cycle at fixed time Period , T : time for one full cycle at fixed position Waves travel at speed v v T v position T v
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3 1 Waves 2 Waves are “ moving oscillations ”. The time-period T of the wave and the space-period ? of the wave are connected by the wave speed v; v position v T v f f v T v 1 Energy Transport in Waves We define Intensity of wave as the power transported through unit area . the energy of the wave is proportional to Amplitude 2 .
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This note was uploaded on 10/11/2011 for the course PHY 2053 taught by Professor Lind during the Fall '09 term at FSU.

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Lect21-ch11ch12_2 - L21Ch11Ch12 L5Ch4 PHY 2053C College...

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