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20.) see photo for question
On a hot 98° F day you are driving EAST at 20 mph when you hear a fire engine approaching from behind at 50 mph with a siren blaring at 440 Hz. You pull over as the truck passes and then resume your drive at 20 mph EAST, now following the engine. Calculate the frequency you hear when the fire engine is A) behind you and approaching, B) in front of you and receding, and C) the frequency change, Af.
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Transcribed Image Text:On a hot 98° F day you are driving EAST at 20 mph when you hear a fire engine approaching from behind at 50 mph with a siren blaring at 440 Hz. You pull over as the truck passes and then resume your drive at 20 mph EAST, now following the engine. Calculate the frequency you hear when the fire engine is A) behind you and approaching, B) in front of you and receding, and C) the frequency change, Af.
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