Chapter 13.2, Problem 18SSC

To determine

To compare: The meaning of adhesive tape & cohesive group with cohesive and adhesive in terms of physics.

Explanation of Solution

Introduction:

Adhesive tape is a type of material which contain adhesive film and it is used to join two or more objects together without using welding and screws.

Adhesive tape is made from a material called backing (paper, plastic, etc.) and it is coated with adhesive.

Cohesion group is formed when different people come together and work for the same goal.

In physics, the attractive force acting between the same type of molecules is known as cohesive force but when attractive force acts between the different types of molecules then it is known as adhesive force.

The liquid can be kept in an open bottle because the cohesive force holds the liquid molecules together.

The liquid drops can cling to window panes; this is due to the adhesive force.

The general meaning of adhesive and group cohesive is almost similar but its meaning in terms of adhesive and cohesive of physics is totally different.

It is because cohesive force only exists between the similar molecules and adhesive force exist for different molecules.