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# Doppler Effect

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PowerPoint to teach doppler effect to Grade 12

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### Doppler Effect

1. 1. Doppler Effect K Warne For FULL presentation click HERE >> www.warnescience.net
2. 2. Moving Away fo < fs fo fs Source vs  = v - vo v + vs Observer vo Away - decrease SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net
3. 3. Moving Away fo < fs fo fs Source vs  = v - vo v + vs Observer vo Away - decrease SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net
4. 4. Moving Away fo < fs fo fs Source vs  = v - vo v + vs Observer vo Away - decrease SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net
5. 5. fo > =< fs fO fS Source vs Observer Towards increase  Away SAMPLE ONLY decrease SAMPLE ONLY  = fO = v + vO v - vS + v + vO - fS v - vS + SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net
6. 6. O O SAMPLE ONLY S S Vo must increase fo fO = Vs must decrease fo Vo must decrease fo Vs must increase fo SAMPLE ONLY fO = v + vO v + vS fS - vO f S v - vS v SAMPLE ONLY
7. 7. Doppler Example  fO A siren with a frequency of 2000 Hz is emitted from an ambulance which travels at a speed of 6o km/h. Calculate the observed frequency in front and behind the ambulance. Speed of sound is 330 m.s-1. = v + vO v - vS + SAMPLE ONLY fS SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net
8. 8. http://www.gehealthcare.com/usen/ultrasound/genimg/index.ht ml SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net
9. 9. WarneScience Hi… This is a SAMPLE presentation only. My FULL presentations, which contain loads more slides and other resources, are freely available on my resource sharing website: www.warnescience.net (paste into your browser if link above does not work) Have a look and enjoy! SAMPLE ONLY Keith Warne SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net
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