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BioMechanical
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Homework Statement
A police car is moving towards the east at 34.0 m/s while sounding its siren. There is a wind blowing from the west with a speed of 15.0 m/s. A second police car is ahead of the first police car and is sounding its identical siren while moving towards the east at 32.0 m/s. A policeman in the first police car hears a beat frequency of 4.80 Hz between the two sirens. The speed of sound in air is 343. m/s.
Calculate
(a) the frequency of the siren;
(b) the beat frequency heard by the policeman in the second police car;
(c) the frequency from the siren of the faster police car heard by a person standing on the sidewalk between the two cars.
Answers
(a) 864.0 Hz
(b) 5.333 Hz
(c) 954.7 Hz
Homework Equations
f1=f(V-Vd/V-Vs)
The Attempt at a Solution
i think v=343-15
v=328m/s
Besides the above, I'm Clueless. Can someone help me out? (no solutions please)
Thanks guys