Question

What is the source of energy? What are the two main categories of the source of energy

Answer 1

Hint: In order to solve this question we need to understand first what energy is. So energy is defined as power applied by the body in a unit interval of time or it is defined as the potential of the body to perform work against the motion. Mechanically, energy can be categorized in two parts: one is kinetic energy and the other is potential energy. Kinetic energy is defined as the product of half of mass and square of velocity while the potential energy is defined as the product of force of gravity and height at which the body is situated measured from ground or reference point.

Complete answer:
Source of energy is defined as a large energy containment whose energy cannot be used directly so you have to do some work to get the energy out from the source. There are two main categories of source of energy, that is, first is renewable source of energy and second is non-renewable source of energy.

Renewable source of energy, as the name suggest that these source of energy can be renewed once consumed and more importantly they are sustainable source of energy and they do not cause any harm to environment thus are more reliable. For example solar energy, geothermal energy, wind energy.

But these types of source does not contain energy for an indefinite amount as in case of solar energy or the energy from any star comes due to nuclear reaction but they lose mass in this process = and hence once they lose all their masses or masses up to a certain limit like Chandrasekhar limit they would eventually collide under gravitational attraction and burst.Nonrenewable sources of energy are those energy which cannot be renewed once consumed like energy from coals or woods cannot be refurbished. They are non-sustainable sources of energy.

Note: It must be remembered that energy cannot be created or destroyed, it can only be transferred from one place to another and this is true for all. Like Einstein's famous equation which states that all mass can be converted into energy and all energy can be converted to mass hence there could not be production or destruction of energy.