Energy exists in different forms and is convertible from one to another.
This is the energy that a particle has due to its position in a
gravitational field (potential energy) or due to its motion (velocity) -
Kinetic energy. Motion can be translational, vibrational, rotational, circular
etc. The potential energy is the work done against the gravitational energy.
is also mechanical energy. Sound waves are produced when particles in a medium
vibrate. Their kinetic energy is the energy of sound wave.
energy - is the energy due to the position of a mass m
in a gravitational field E at a point P. The energy is the product of potential
and mass. It is work done against a gravitational force.
Electrical Energy :
This is the energy that a charged particle q at a position P has due to the
electric potential P. The energy is charge multiplied by potential. This is the
work done against an electrical force.
This is the energy that a magnetic pole p at position P has due to the magnetic
potential at P. It is the multiplication of pole strength with potential. It is
equal to the work done against a magnetic force.
It is the energy stored in the matter due to chemical bonds amongst atoms and
molecules of the matter. Some energy is released when chemical reactions take
place, as the bonds change. The energy (latent) due to the physical condition
of the matter (solid, liquid or gaseous) is also included.
Energy due to possessing a thermal potential called temperature of the
particle. Heat flows from a body of higher temperature to lower. Heat energy of
a body is given by specific heat capacity * mass * temperature.
Energy in an Electromagnetic wave :
This is the energy of photons linked with the wave. E = h ν. Light
waves and radiations
are electromagnetic waves.
It is the potential energy of the matter possessed by the nucleus to bind the
protons and neutrons together. Some of it is released when changes occur in the
composition of nucleus.