Answer to Question #73475 in Mechanics | Relativity for santhosh
accident site with a speed of 90 km/h. Two police officers on separate motor
cycles head for the same accident site: one follows the ambulance with a speed of
80 km/h and the other approaches the accident site from the other direction with a
speed of 80 km/h. What frequency does ambulance siren has for each of the police
officers? Take the speed of sound equal to 340 m/s.
1) Police officer follows the ambulance
f=(1+∆v/c) f_0=(1+(22.2- 25)/340)250 Hz = 248 Hz
2) Police officer moving towards the ambulance
f'=(1+∆v'/c) f_0=(1+(25 - 22.2)/340)250 Hz = 252 Hz
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