PHY183-Lecture54 - April 27, 2006 Physics for...

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Unformatted text preview: April 27, 2006 Physics for Scientists&Engineers 1 1 Physics for Scientists & Physics for Scientists & Engineers 1 Engineers 1 Spring Semester 2006 Lecture 54 April 27, 2006 Physics for Scientists&Engineers 1 2 Few points Few points ! Final Exam date: Thurs. May 4, 8-10 pm E100 VMC (Veterinary Medical Center) Bldg. ! Make-up Final Exam date: (for students with good excuse) Tues. May 2, 3-5 pm 1420 BPS Bldg. Please contact Profs. Schmidt or Yuan ! Clicker points (thru April 18) posted on Lon-Capa Maximum points so far: 146 Scores out of ! maximum = 73 ! Practice final exam posted in DOCS in Lon-Capa April 27, 2006 Physics for Scientists&Engineers 1 3 Excitation of Resonance Excitation of Resonance ! Basically all musical instruments use excitation of resonances in body of instrument to amplify volume April 27, 2006 Physics for Scientists&Engineers 1 4 Recall: Waves on a String Recall: Waves on a String ! Possible wavelengths ! Lowest, n=1: fundamental, = 1st harmonic ! n=2: 2nd harmonic, n ! n 2 = L , n = 1,2,3,... ! n = 2 L n , n = 1,2,3,... April 27, 2006 Physics for Scientists&Engineers 1 5 Organ Pipes Organ Pipes April 27, 2006 Physics for Scientists&Engineers 1 6 Closed (on one end) Pipes...
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PHY183-Lecture54 - April 27, 2006 Physics for...

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