Fire Truck with Flashing Alarm Siren Lights Standing in the City Streets at Night in Rescue Fire Service

SOLVED: The siren of a fire truck at rest emits at a frequency of 480 Hz. What frequency will you hear if you are at rest and the fire truck moves at 22 m/s toward you?Answer:Hz513.2

fire department trucks with flashing siren lights standing in the city streets at night. rescue emergency scenery background