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A truck traveling eastward is moving at 16.0 m/s . a police car is traveling westward...

A truck traveling eastward is moving at 16.0 m/s . a police car is traveling westward at 46.0m/s if the frequency of the sound coming from the police siren is a constant 520.0 Hz( actually produced frequency), what is the change in frequency (in Hz) heard by an observer in the truck as the two vehicles approach each other as compared to moving away from each other? the temperature of the air is 95.0 degree F.
a. 240
b. 236
c.230
d.213
e.183

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