the displacement or size of the deformation is directly proportional to the deforming force called hookes law. 

If the student have the attendance, and bunk the class feel proud. If student does not have attendance thinks about bunked class how to manage it. ???

The capacity of doing work. The ability to work. It may exist in potential, kinetics, chemical, electrical, thermal, nuclear,mechanical, gravitational, elastic sound energies. Energy can be converted from one form to other form. Energy is measured in joules. True energy always remain constant.

I don't think so. Colleges only give training to get job, not to start business. 

Variables are used to store information to  reference and manipulate  in a computer program.