What is a rarefaction?

Rarefaction is the reduction of an item's density, the opposite of compression. Like compression, which can travel in waves, rarefaction waves also exist in nature. A common rarefaction wave is the area of low relative pressure following a shock wave.

Explanation:

Down below

Explanation:

Rarefaction is the reduction of an item's density, the opposite of compression. Like compression, which can travel in waves, rarefaction waves also exist in nature. A common rarefaction wave is the area of low relative pressure following a shock wave.

Hope this helps!!

the body's situation won't change the forces are equal opposit and on the same body

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up