Physics Physics Practice Problems Solutions Library

The Doppler Effect Solutions Library

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12 solutions

The Doppler Effect

Q. An opera singer in a convertible sings a note at 600 Hz while cruising down the highway at 100 km/h . The speed of sound n the air is 343 m/s. A) W...

Solved • Feb 9, 2021

The Doppler Effect

Q. You are standing on a tram station platform as a tram goes by close to you. As the train approaches, you hear the whistle sound at a frequency of f...

Solved • Dec 4, 2020

The Doppler Effect

Q. A student knows that an ambulance siren has a frequency of fs = 399 Hz. He measures, when the ambulance is approaching him.  The frequency fo = 414...

Solved • Aug 3, 2020

The Doppler Effect

Q. A student knows that an ambulance siren has a frequency of fs = 399 Hz. He measures, when the ambulance is approaching him.  The frequency fo = 414...

Solved • Jul 20, 2020

The Doppler Effect

Q. Suppose an oncoming ambulance moving at 115 km/h emits a steady 785-Hz sound from its sirenWhat frequency, in Hz, does she observe after the ambula...

Solved • Jul 17, 2020

The Doppler Effect

Q. Suppose an oncoming ambulance moving at 115 km/h emits a steady 785-Hz sound from its sirenWhat frequency, in Hz, is received by a person watching ...

Solved • Jul 16, 2020

The Doppler Effect

Q. Two eagles fly directly toward one another, the first at 15.0 m/s and the second at 20 m/s. Both screech, the first one emitting a frequency of 320...

Solved • May 21, 2020

The Doppler Effect

Q. A student knows that an ambulance siren has a frequency of fs =  396 Hz. He measures, when the ambulance is approaching him, the frequency fo = 417...

Solved • May 13, 2020

The Doppler Effect

Q. A police car is traveling at a speed vc to the right and a truck is traveling at a speed  vt to the right. The frequency of the siren on the police...

Solved • Oct 6, 2017

The Doppler Effect

Q. An ambulance is traveling North at 54.3 m/s, approaching a car that is also traveling North at 33.6 m/s. The ambulance driver hears his siren at a ...

Solved • May 18, 2017

The Doppler Effect

Q. An object emitting a sound at a constant frequency is thrown into the air. As the source travels up and back down again, the frequency you hear is ...

Solved • Mar 28, 2017

The Doppler Effect

Q. Two speakers, A and B, are moving towards each other with a closing speed of 30 m/s, meaning the distance separating the two speakers is decreasing...

Solved • Mar 24, 2017