The Doppler Effect , if I understood your question correctly . See link for further information .
The answer is a clock - it moves its hands but doesn't make a sound, while a bell makes a sound but stays in one place.
An arrow makes a "whoosh" sound as it moves.
It's called a train whistle.
toot
You would hear a change in pitch because of the Doppler effect. As the train moves towards you, the sound waves are compressed, resulting in a higher pitch. As the train moves away, the sound waves are stretched, resulting in a lower pitch.
As the train approaches you, the whistle will have a higher pitch due to the Doppler effect, where sound waves are compressed as the source moves closer. Once the train passes and moves away, the pitch will drop as the sound waves are stretched out. This change in pitch is a common experience when observing moving objects that emit sound.
The boy standing on the ground would hear the sound as the train’s horn is being blown, but the pitch would gradually decrease as the train moves away from him. This is due to the Doppler effect, where the frequency of the sound waves decreases as the source of the sound moves away from the observer.
A locomotive typically makes a loud chugging or rumbling noise as it moves along the tracks. This noise is generated by the engine as it pulls the train cars forward.
train moves use oil
This effect is called the Doppler effect. It occurs when there is relative motion between the source of a sound (like a train whistle) and an observer. As the train approaches, the sound waves are compressed, resulting in a higher pitch, and as it moves away, the sound waves are stretched, causing a lower pitch.
The change in pitch of an approaching train whistle is due to the Doppler effect. As the train moves towards the observer, the sound waves are compressed, leading to a higher frequency and thus a higher pitch. Similarly, as the train moves away, the sound waves are stretched, resulting in a lower frequency and a lower pitch.
Yes, you would hear a change in pitch. As the train approaches you, the pitch of the whistle would sound higher because the sound waves are compressed. As the train moves away from you, the pitch would sound lower as the sound waves are stretched out. This is known as the Doppler effect.