if energy nither can be created or nor can destroyed then where does it come from?

Answer 1

We don't know where it came from in the first place.

At the moment, anyone who tells you any different either

a) is bullsh!tting you
b) is on his way to Sweden to get his/her Nobel prize

Answer 2

1)Energy conservation principle says that energy content of an isolated system will be constant, gravitational potential energy is negative and if we add all the other energy with it the sum might be zero i.e. Gravitational potential energy + all the other energy = 0. But there are many unknown factors like dark matter and dark energy that is why no body is sure about it currently.

2)According to “Noether's Theorem”, conservation of energy is linked to and defined by the homogeneity of time. Since the Big Bang is a singularity where time is not necessarily homogeneous, energy is not necessarily conserved.

3)The world of subatomic particles is much different from that of our common day experiences. According to quantum mechanics, energy conservation may be violated for a short period of time this is a fact of the physics of small particles. The energy conservation in the usual sense may be violated for a short period of time. The amount of energy seems to be created and time for which it is created are related through Heisenberg uncertainty principle , ∆E. ∆t ≈ h/2π (h is the Planck constant)

Answer 3

According to Big Bang Theory Energy was borne out of a Singularity.What ever it is believed by science was inside that singularity. So if the Scientists say Energy is an explosion and expansion of singularity ,then we have no choice to believe other wise.
Energy is then an explosion of the Expansion.
However the Big Bang theory is difficult to be understood .As we dont really Understand what kind of chemical reaction caused the Explosion.
So the Creation of Energy ,just like Universal Time had a begining.

Answer 4

Ya we know that the energy can't be created nor be destroyed . Actually it changes from one form to another . For example the conversion of chemical energy into electrical energy (in battery), the conversion of electrical energy into mechanical energy (in fan) etc.

Answer 5

we get the light energy from the sun and the energy is created due to number of reactions in sun. The sun is basically the source of all energies. We cannot able to create or destroy energy. But nature can.

Answer 6

Energy can neither be created nor destroyed but it can be converted from one form to another.
As for energy sources, the sun happens to be the biggest supplier of energy viz. solar energy. We also get energy by burning natural fuels like wood, coal and petroleum. We can also create energy from natural objects like coal or running water by converting their inherent energy into another form, e.g. electrical energy. Much in the same way we convert the energy in radioactive substances into nuclear energy.
Thus everywhere energy is being converted from one form to another. What we are destroying in the process of obtaining energy are the materials that produce that energy.
Also, we have not mastered the technology to harness or store all kinds of energy. E.g. we can produce electrical energy in power plants by burning coal, but we can't store electricity. Thus, when one form of energy is converted to another form, it can not always be harnessed or stored. But it exists all the same.

Answer 7

The energy we use, comes from other energies. When we use electrical energy, it comes from the steam turbine's motion (Mechanical energy). This mechanical energy comes from the steam and the steam takes energy from the heat generated by the fuel. The chemical reaction of fuel and oxygene is the source. This chemical energy was stored by the animals and plants long long ago from solar energy. Solar energy is the source of all energies in the earth.

Answer 8

Energy + mass equivalent ( E = mc2) of the universe is constant however the different form of energies which we observe is basically conversion of one form of energy to another. However it should be noted that energy is "created" from nuclear reactors because some mass is "destroyed".

Answer 9

That's a big "if", and perhaps a misquote... Sometimes it is stated that "energy can neither be created nor destroyed, *as far as we can presently observe*." -or some similar paraphrase.

Depending on your philosophical or theological standpoint, some would say energy came from the phrase "Let there be light"... "and it was good".

Answer 10

There may be no net energy in the universe. Some forms of energy are negative (like gravitational), and it may all add up to a big zero.

Answer 11

From conversion of one type of energy into the other.