frequency and pitch would change as the source moves. As the source moves away, the frequency and pitch decrease, and as the source moves closer, they increase. This is due to the Doppler effect, where the relative motion between the source and observer causes a shift in frequency.
No, the speed of sound is constant in a medium, so the speed of sound heard by an observer staying in one spot does not change if the source of the sound is moving. The frequency and wavelength of the sound may be affected by the motion of the source, but not the speed.
The pitch of a sound means the frequency. That stays constant with distance. You mean the sound pressure level that decreases with distance.
When the velocity of a moving object stays the same, it has a constant speed.
an acceleration of Zero, and a constant Inertia.
A mobile source refers to a source of pollution that moves or is not fixed in one location, such as cars or trucks, while a stationary source refers to a source that remains in one place, like a factory or power plant. Mobile sources contribute to pollution through emissions while stationary sources produce pollution by releasing harmful substances into the air or water.
No, the speed of sound is constant in a medium, so the speed of sound heard by an observer staying in one spot does not change if the source of the sound is moving. The frequency and wavelength of the sound may be affected by the motion of the source, but not the speed.
It stays the same.
The pitch of a sound means the frequency. That stays constant with distance. You mean the sound pressure level that decreases with distance.
When the velocity of a moving object stays the same, it has a constant speed.
an acceleration of Zero, and a constant Inertia.
a monotone sound monotonous
stays
When an object is moving it stays moving unless acted upon by opposing force(s). i.e. gravity, friction, etc. See Newton's 1st law of motion: related links.
The "change in sound" refers to a change in frequency. If (for example) you move compared to the sound source, then more, or less, wave crests may pass you every second, depending in which direction you move. It's best to check an article on the Doppler effect (for example, in the Wikipedia); with an illustration or animation, it is actually quite intuitive why this happens.
constant
constant
nothing, atoms are always moving.