Two train whistles have identical frequencies of 165 Hz. When one train is at rest in the station and the other is moving nearby, a commuter standing on the station platform hears beats with a frequency of 4.30 beats/s when the whistles operate together. What are the two possible speeds and directions the moving train can have? slower speed m/s towards the station faster speed m/s away from the station

A train is moving parallel and adjacent toa highway with a constant speed of 34 m/s.A car is traveling in the same direction as thetrain at 65 m/s. The train’s whistle sounds at380 Hz.When the car is behind the train what frequency does an occupant of the car observefor the train whistle? The speed of sound is343 m/s.Answer in units of Hz

My heart beats 124 times in two minutes. Determine the frequency of my heartbeat. O 2.0 Hz O 0.48 Hz O 1.03 Hz O None of the above

A police car traveling at a speed of 30.0 meters per second sounds its siren, which has a frequency of 1.00  103 hertz. As the police car approaches a stationary pedestrian, the pedestrian detects a siren frequency of which of the following? 1.00  103 Hz 9.19  102 Hz  30.0 Hz 1.10  103 Hz

A sound source moves through air toward a stationary observer.  The frequency of the sound the observer hears is 20% higher than the source frequency. How fast is the observer moving?

A red train is stationary and a green train is moving forward away from the red train at a speed of 28 m/s. Between the trains, is a bicyclist moving towards the stationary red train at a speed of 15.3 m/s. each train has a whistle with a frequency of 349 Hz. the air temperature is 2 degrees celsius.  What are the frequencies of the whistles heard by the bicyclist, coming from the green and red trains? PLEASE INCLUDE UNITS AND ROUND TO 4TH DECIMALS PLACE.

Two trains emit 559 Hz whistles. One train is stationary. The conductor on the stationary train hears a 3.3 Hz beat frequency when the other train approaches. What is the speed of the moving train?

A train is moving parallel to a highway with a constant speed of 20 m/s. A car is traveling with a speed of 40.0 m/s. The car's horn sound at a frequency of 510 Hz, and the train whistle sounds at a frequency of 320 Hz. When the car is behind the train, what frequency does an occupant of the car observe for the train whistle?

Two eagles fly directly toward one another, the first at 15.0 m/s and the second at 21.0 m/s. Both screech, the first one emitting a frequency of 2500 Hz and the second one emitting a frequency of 3800 Hz. What frequencies (in Hz) do they receive if the speed of sound is 330 m/s? first eagle Hz second eagle Hz Additional Materials O Reading

An osprey’s call is a distinct whistle at 2200 Hz. An osprey calls while diving at you, to drive you away from her nest. You hear the call at 2300 Hz. How fast is the osprey approaching?