anyone3376 anyone3376

29-01-2024
Physics

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The siren of a fire engine that is driving northward at 33.0 m/s emits a sound of frequency 2120 Hz. A truck in front of this fire engine is moving northward at 25.0 m/s.
a) 2250 Hz
b) 2120 Hz
c) 1980 Hz
d) 2340 Hz

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