Thursday
July 24, 2014

Homework Help: Physics

Posted by Emily on Friday, December 7, 2012 at 11:58pm.

A person standing close to a railroad crossing hears the whistle of an approaching train. He notes that the pitch of the whistle drops as the train passes by and moves away from the crossing. The frequency of the distant approaching whistle is 540 Hz; it drops to 470 Hz after the train is well past the crossing. What is the speed of the train? Use 340 m/s for the speed of sound in air.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics doppler effect - A person standing close to a railroad crossing hears ...
Physics - 1. A train whistle has a frequency of 1000 Hz. If the train is ...
physics - 1. A whistle you use to call your hunting dog has a frequency of 21 ...
physics - A train is moving parallel to a highway with a constant speed of 16.0 ...
Physics - A physics student sits by the open window on a train moving at 25 m/...
Physics - A physics student sits by the open window on a train moving at 25 m/...
physics - A physics student sits by the open window on a train moving at 25 m/...
physics - A train is moving parallel and adjacent to a highway with a constant ...
physics - A train is moving parallel and adjacent to a highway with a constant ...
physics - A train whistle emits a sound with a frequency of 1000 Hz when ...

Search
Members