a lower-pitched sound
by means of moving
it is unclear what you mean. One form of 'compression' would be the dopplar effect whereby a object producing sound is moving towards the listener. The sound heard by the listener is of a higher frequency than the sound that is produced.
Because the earth is rotating.
A train travels over a FIXED track not a MOVING track.
Velocity tells you what speed a moving object travels at and in what direction.
No. The air that travels over the wing moves faster.
There are two methods - acoustic and electric. Acoustic:- When the strings are played, the sound of the vibration is amplified by the air moving inside the guitar. The sound 'escapes' through the sound hole, and travels to the ears of the listener. Electric:- The movement of the strings induces an electric current in the guitar's pick-up coil. This is converted into electrical energy, which is fed to an amplifier. The amplifier sends the electrical signal to the speaker - which the listener hears.
In physics, we observe what happens and try to predict it, seldom does that answer why something happens. wind chill is caused by "convection cooling". Air (wind) moving past a body (convection) takes more heat away than when air is not moving (radiation). A perfect example is blowing air over a spoon of soup to cool it.
The question is incomplete. If the radio is moving along with the listener then listening is possible. If the radio is at rest then the listener cannot hear the sound vibrations given out by that radio.
By moving it's feet. Can you be more clear?
The object is moving at the speed of 50 ms-1 .
It shows the speed and the distance the car travels.