compressional waves
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An area where particles are spread out has low density. This means that the particles are further apart from each other compared to a more densely packed area. Examples include a gas or a dilute solution.
The rarefaction is the area of a longitudinal wave where the particles of the medium are spread out. This region is where the particles are farther apart compared to the rest of the wave.
Yes, liquid particles can spread out due to diffusion. Diffusion is the process by which particles move from an area of high concentration to an area of low concentration until they are evenly distributed. This is why liquid droplets can spread and mix with other liquids.
The area on a compressional wave where particles are spread out is called a rarefaction. In a rarefaction, the particles are further apart compared to the surrounding areas where they are closer together. This alternating pattern of compressions and rarefactions is characteristic of a longitudinal wave such as a sound wave.
The rarefaction is the area of a sound wave where particles are less dense. This corresponds to the regions of lower pressure within the wave, where particles are spread out farther apart from each other.
Diffusion is the movement of particles from an area of high concentration to an area of low concentration. In gases, diffusion occurs rapidly due to the high kinetic energy of the particles. In liquids and solids, diffusion is slower but still occurs as particles move and spread out over time.