Why is energy conserved?
30883
Why can't energy be created or destroyed?
107902
Is Kinetic Energy stored as (rest) mass?
19163
Why does the amount of energy transferred depend on distance rather than time?
120098
Work and Kinetic energy rely on each other which came first?
4143
How can momentum but not energy be conserved in an inelastic collision?
8178
What Is Energy? Where did it come from?
48114
Quantum mechanics - how can the energy be complex?
119581
How to understand whether potential energy increases or decreases?
45613
Conservation of energy when slowing an object down
123654
How can energy be useful when it is 'abstract'?
146039
Is it always possible to define energy of a system?
107031
Is conservation of energy only for isolated systems?
59313
What symmetry causes the Runge-Lenz vector to be conserved?
84458
What's the real fundamental definition of energy?
107971
Hubble's law and conservation of energy
68284
Is the law of conservation of energy still valid?
80329
How is dark energy consistent with conservation of mass and energy?