Question

What is adhesive and cohesive forces in physics?

Answer 1

Explanation:

Cohesion in physics,

**the intermolecular attractive force acting between two adjacent portions of a substance, particularly of a solid or liquid.

**It is this force that holds a piece of matter together.

Adhesion in physics,

**Intermolecular forces act also between two dissimilar substances in contact, a phenomenon called adhesion.

**These forces originate principally because of coulomb (electrical) forces.

**When two molecules are close together, they are repelled; when farther apart, they are attracted; and when they are at an intermediate distance, their potential energy is at a minimum, requiring the expenditure of work to either approximate or separate them. Thus, work is required to pull apart two objects in intimate contact, whether they be of the same or different materials.

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Answer 2

Answer:

Adhesive force is the force of attraction between two different molecules

For example-attraction between water molecule and air molecule

Cohesive force is the force of attraction between two similar molecules

For example- attraction between water molecules