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# (Solved): A police car siren has frequency f of 1200Hz. The speed of sound is 343m//s. What is f^(') as heard ...

A police car siren has frequency f of 1200Hz. The speed of sound is 343m//s. What is f^(') as heard by the observer if a) Car moves towards observer at 25m//s b) car moves away from observer at 25m//s c) Observer moves toward stationary car at 25m//s d) observer moves away from stationary car at 25m//s e) both move towards each other with v=25m//s f) both move away from each other at v=25m//s 1: f^(')=f((343+25)/(343+25)) 2: f^(')=f((343+25)/(343-25)) 3: f^(')=f((343-25)/(343-25)) 4: f^(')=f(1+(25)/(343)) 5: f^(')=f((1)/(1+(25)/(343))) 6: f^(')=f(1-(25)/(343)) 7: f^(')=f((1)/(1-(25)/(343))) 8: f^(')=f((343-25)/(343+25))

A police car siren has frequency of . The speed of sound is . What is as heard by the observer if a) Car moves towards observer at b) car moves away from observer at c) Observer moves toward stationary car at d) observer moves away from stationary car at e) both move towards each other with f) both move away from each other at 1: 2: 3: 4: 5: 6: 7: 8:

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