Jetc34
contestada

as the train in the image moves to the right how does the train horn sound to person a?

as the train in the image moves to the right how does the train horn sound to person a class=

Respuesta :

MathPhys

Answer:

Explanation:

Person A's velocity relative to the train is 0.  Therefore, the pitch of the horn will not change.

Chlidonias

Answer:

D. The pitch does not change.

Explanation:

When the source of sound moves away, the pitch drops. and when the source of sound approaches the pitch rises. This is called'Doppler effect'.

Here the person a and the sound horn are both in the same vehicle. Which means their relative velocity is zero. So the horn is neither approaching nor receding the person A

If  the source is approaching

[tex]f_{new}= \frac{v_{sound} }{v_{sound} -v_{source} }f_{original}[/tex]

If the source is receding

[tex]f_{new}= \frac{v_{sound} }{v_{sound} +v_{source} }f_{original}[/tex]

Hence the right answer is option D. The pitch does not change