PHY183-Lecture55

# PHY183-Lecture55 - Few points Final Exam date Thurs May 4...

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April 27, 2006 Physics for Scientists&Engineers 1 1 Physics for Scientists & Physics for Scientists & Engineers 1 Engineers 1 Spring Semester 2006 Lecture 55 N-1 !!! April 27, 2006 Physics for Scientists&Engineers 1 2 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 More points ! Evaluation forms at end of class (~10 min early) ! Review tomorrow Problems relevant to final Bring any questions you may have April 27, 2006 Physics for Scientists&Engineers 1 4 Doppler Effect: General Case ! General formula for observed frequency of sound f o as a function of emitted frequency of sound f : v sound = sound velocity v observer = velocity of observer v sorce = velocity of source ! +- signs for the following cases: Source moves away from observer: + Source moves towards observer: - Observer moves away from source: - Observer moves towards source: + f o = f v sound ± v observer v sound ± v source

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April 27, 2006 Physics for Scientists&Engineers 1 5 Mach Cone ! What happens when we exceed the speed of sound with our source velocity?
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