A trumpet player on a moving railroad flatcar moves toward a second trumpet player standing alongside the track both play a 490 Hz note. The sound waves heard by a stationary observer between the two players have a beat frequency of 2.0 beats/s. What is the flatcar's speed? Take the speed of sound to be 343 m/s.

The value is

Explanation:

From the question we are told that

The frequency of the second player is

The beat frequency is

The speed of sound is

Generally the frequency of the note played by the first player is mathematically represented as

=>

=>

From the relation of Doppler Shift we have that

Here

So

=>

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."