Doppler Effect and Shock Wave

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Questions

• Why does the doppler effect occur in all waves?
• How was the doppler effect discovered?
• How can I use the doppler effect equation?
• How the doppler effect is used in medicine?
• What is the frequency heard by a person driving at 15 m/s toward a blowing factory whistle (800. Hz) if the speed of sound is 340.6 m/s?
• When an automobile moves towards a listener, does the sound of its horn seem relatively low pitched, high pitched or normal?
• How does the doppler effect change the appearance of emitted light?
• How is the doppler effect used in an ultrasonography diagnostic?
• A sparrow chases a crow with a speed of 4.0 m/s, while chirping at a frequency of 850.0 Hz. What frequency of sound does the crow hear as he flies away from the sparrow with a speed of 3.0 m/s?
• What is meant by the terms red-shift and blue-shift?
• Horseshoe bats use the Doppler effect to determine their location. A horseshoe bat flies toward a wall at a speed of 19 m/s while emitting a sound of frequency 37 kHz. What is the beat frequency between the emission frequency and the echo?
• How do astronomers use the Doppler effect to determine the velocities of astronomical objects?
• Suppose that a public address system emits sound uniformly in all directions and that there are no reflections. The intensity at a location 27 m away from the sound source is 3.0 × 10-4 #W/m^2#. What is the intensity at a spot that is 87 m away?
• What is the Doppler shift, and why is it important to astronomers?
• A car sounds its horn (502 MHz) as it nears a pedestrian. The pedestrian has a perfect pitch and determines that the sound from the horn has a frequency of 520 Hz. If the speed of the sound that day was 340 m/s, how fast was the car travelling?
• A commuter train passes a passenger platform at a constant speed of 40.0 m/s. The train horn is sounded at its frequency of 320 Hz. What wavelength is detected by a person on the platform as the train approaches?
• Question #7f704
• Question #5de75
• Word Problem regarding The Doppler Effect?
• Mike is playing his speaker at an unknown frequency. His friend, Emma, gets on her bike and rides away from Mike at a uniform speed, holding an open-air column horizontally over her head. What was the frequency of the sound coming from Mike's speaker?
• Question #339ae
• Question #f4962
• Question #5ca90
• Question #a6987
• Doppler Effect?