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3i into the equation. Only equations on th al answer should have the correst number of 21.(30 pts) A fire truck with sirens on, is driving north on a stree. A car is driving on the same street and sees the fire truck ahead. The car is moving at a speed of 15.7 m/s a street. A car is driving south and the fire truck is moving at a speed of 31.8 m/s. The siren of the fire truck produces a 965 Hz sound. The speed of sound in air is 343 m/s A) What frequency does the person in the car hear? B) If the sound from the siren is produced at 45.2 W, what is the reading on the decibel meter held by the person when the car is 36.8 m away from the fire truck? Assume the sound from the horn is emitted uniformly in all directions (A-4nr) C) What is the farthest distance from the fire truck that a person could hear the siren?
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