The motion of planets around the Sun is considered as a periodic motion as it is repeated regularly in equal periods of time, The motion of spring is considered as an oscillatory periodic motion,...
At the maximum height of a projectile, its mechanical energy is equal to its potential energy only because the mechanical energy of an object is the sum of potential and kinetic energies of the...
Energy is the ability to do work or to make a change, The measuring unit of energy is the joule, We need energy in different fields in our life, We provide cars with fuel...
Any metal contains positive ions & free electrons which can move around inside the metal but can not leave it due to the attractive forces of the surface which may be represented by a...
