What phenomena show that the particles of the substance of which a solid is composed are not only attracted to each other

What phenomena show that the particles of the substance of which a solid is composed are not only attracted to each other, but also repelled?

When bodies are compressed, elastic forces arise, which tend to return the body to its original shape.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.