Energy neither created nor destroyed. Then where energy comes from?
2073
Conservation law of energy and Big Bang?
27525
Where does the energy get transferred when we push the wall?
52558
Where do ultra-high-energy cosmic rays come from?
120098
Work and Kinetic energy rely on each other which came first?
80749
If Energy can be converted into mass, why can it not be converted into charge?
133421
what type of energy electrical current have
153087
How does electricity produce heat, and where do the electrons go?
51275
What is force? How does a constant force output a nonconstant power?
42186
When is the Hamiltonian of a system not equal to its total energy?
119581
How to understand whether potential energy increases or decreases?
5891
Where does gravitational waves' energy go?
131167
Kinetic energy of the object, but Potential energy of the system: Why is it so?
145238
Where does the energy required to stop a moving body come from and go?
17619
How does rest mass become energy?
89301
Is the total energy of the universe constant?
62419
Einstein equation $E=mc^2$: Does it mean an object without mass does not have energy?
110104
If conservation of energy was wrong, how would we know about it?