Conservation and Dissipation of Energy | GCSE Physics
The Law of Conservation of Energy states that total energy in a closed system stays the same.
Can energy be created?
What is Conservation and Dissipation of Energy | GCSE Physics?
"The principle that total energy remains constant in a closed system."
Which law states that energy cannot be created or destroyed?
Why can efficiency never be 100% in a mechanical system?
A 5 kg weight is lifted 2 metres. Calculate its GPE (g = 9.8).
Which formula is used to calculate kinetic energy?
Energy Laws
Energy is dissipated (wasted) when it spreads out to the surroundings.
Dissipated energy is usually transferred to thermal energy stores.
Lubricants reduce friction to prevent unwanted thermal dissipation.
Thermal insulation reduces the rate of energy transfer by heating.
Misconception: Energy isn't "lost"; it just becomes less useful as it dissipates into the environment.
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