A person riding in car is blowing an air horn at a frequency of 302 Hz. You are sitting on a bench at the bus stop, minding your own business? The car is moving quickly at 85 mph (38 m/s). What is the frequency that you hear as the car drives away? It is a hot day so the speed of sound is 350m/s

Going down the road at 65 miles per hour on a 86.0 °F summer day, Bari heard a siren approaching. Bari knows that a police siren's frequency is 1280.0 Hz, but it didn't sound like that. Bari pulled over a lane, without slowing down, after seeing the flashing lights of the police car coming up from behind, and the police passed going 25 miles per hour faster than Bari was going. (1 mile = 1.60 km) a) what was the speed of sound on that warm summer day? b) How fast, in m/s, was the police car going? c) What frequency did Bari hear from the siren before the police car passed? d) What frequency did Bari hear from the siren after the police care had passed?

A ship's sonar uses a frequency of 22.5 kHz. The speed of sound in seawater is 1533 m/s. a). Draw a sketch of the scenario. b). What is the frequency received on the ship that was reflected from a whale traveling at 4.15 m/s away from the ship? Assume that the ship is at rest?

Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 436 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.) m/s

An ambulance with a siren emitting a frequency of 1600HZ overtakes and passes a cyclist pedaling a bike at 4 m/s. After being passed, the cyclist hears a frequency of 1590HZ. How fast is the ambulance moving? Temperature of air is 25°C. 2.

Someone hits a cold metal pipe with a hammer, and it produces a sound with a frequency of 360.0 Hz. If the surrounding air is 15.0 ̊C, what is the wavelength of the sound wave?

An ultrasound unit is being used to measure a patient’s heartbeat by combining the emitted 2.0 MHz signal with the sound waves reflected from the moving tissue of one point on the heart. The beat frequency between the two signals has a maximum value of 520 Hz. What is the maximum speed of the heart tissue?

A fire truck sits at rest and emits a sound from its siren with a frequency of 385.0 Hz. If you are biking away from the fire truck at a velocity of 5.200 m/s, what frequency will you hear from the siren? Assume the speed of the sound being emitted from the siren is 327.0 m/s.

A monorail train approaches a platform at a speed of 10.0 m/s while it blows its whistle. A musician with perfect pitch standing on the platform hears the whistle as ‘middle C’, a frequency of 261 Hz. The sound speed is 331 m/s. There is no wind and the surrounding temperature is 27°C. What is the observed frequency of the whistle when the train is at rest?

You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind and you perceive the frequency as 1370 Hz. You are relieved that he is in pursuit of a different speeder when he continues past you, but now you perceive the frequency as 1330 Hz. What is the speed of the police car? The speed of sound in air is 343 m/s.