Question: A cop car moving at a speed vcop = 38.9 m/s emits a siren whose buit-in frequency is fs = 870. Hz . You are

A cop car moving at a speed vcop = 38.9 m/s emits a siren whose buit-in frequency is fs = 870. Hz . You are driving at vcar = 44.1 m/s . The speed of sound in air is 343. m/s Part B - Case2: Calculate the frequency of the siren heard by you. Here, both the source (cop car) and the observer are moving. You need to choose a proper sign in the numeritor, and from the denominator. Keep 2 digits after the decimal point, in Hz. The accepted range of answer is set to be narrow

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