ï»¿ It is easy to break the wire by bending repeatedly in opposite direction instead of breaking it by stretching directly. Why? from Physics Mechanical Properties of Solids Class 11 Manipur Board

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It is easy to break the wire by bending repeatedly in opposite direction instead of breaking it by stretching directly. Why?

It is easy to break the wire by bending repeatedly in opposite directioninstead of breaking it by stretching directly because by applying alternate force on the wire, the wire loses its strength and hence it is easy to break.
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What is the force of cohesion?

Cohesive attraction or cohesive force is the force of attraction between same types of molecules sticking together.
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What is the nature of inter-atomic or inter-molecular forces?

Inter-atomic or inter-molecular forces are electrostatic in nature.

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What is the force of adhesion?

Adhesive force is the attractive force between two unlike molecules. They are caused by forces acting between two substances like electrostatic force (attraction due to opposing charges), mechanical force etc.

E.g., Force of attraction between gum and paper.

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Define interatomic forces and give an example?

The force between atoms of the molecule is called interatomic force.

E.g.The nucleus and electron cloud of a molecule is binded by electrostatic force.
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What do you understand by intermolecular forces?

Intermolecular force is the force between the molecules of the substance is called intermolecular force.

There is a dipole-dipole interaction between the molecules.
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