Below a certain frequency you won't hear it- depends on individual but about 20Hz
Compression happens during the part of the sound wave where the air particles are pushed closer together, resulting in an increase in air pressure. This creates a region of higher pressure within the sound wave, causing the compression of the air particles.
With the same speed -Apex (1.2.4)
The frequency of this sound wave is very near constant.
The result of a reflected sound wave is obviously an echo.
The amplitude (The height of the wave) of the wave increases as the sound gets louder.
Gets higher
Wavelength shortens as frequendcy increases.
The frequency of a sound wave affects the pitch of the sound. If the frequency of a wave increases causing more waves for every second, the pitch will go up, and vice-versa.
The sound gets softer.
That depends on the speed of the wave, and you haven't told us enough about it for us to take a guess at what kind of a wave it is, or what its speed is. -- If it's a sound wave in air at sea level, then the frequency is around 0.61 Hz. -- If it's a radio wave in vacuum, then the frequency is 535,344 Hz.
it changes
If the amplitude of a sound wave increases, the sound will become louder. This is because amplitude directly correlates with the intensity or volume of the sound.
The greater the amplitude of a sound wave the louder the sound.
If the amplitude of a sound wave is doubled, the intensity of the sound wave will increase by a factor of four. This is because intensity is proportional to the square of the amplitude of the wave.
As the sound wave travels through the air, the air particles vibrate back and forth in the direction of the wave, transferring the sound energy.
Compression happens during the part of the sound wave where the air particles are pushed closer together, resulting in an increase in air pressure. This creates a region of higher pressure within the sound wave, causing the compression of the air particles.
When two sound waves are out of phase, they can either cancel each other out (destructive interference) or reduce the overall amplitude of the resulting sound wave. This happens because the peaks of one wave align with the troughs of the other, causing them to partially or completely nullify each other's amplitudes.