Energy in moving charges or
static electric charges
Elastic Potential
Stored energy in
squashed or stretched
objects
Nuclear
Stored in the
nuclei of atoms
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Energy transfer
Energy can be transferred usefully,
stored, or dissipated , but cannot be
created or destroyed
When energy is transferred, only part
of it may be usefully transferred; all
other energy output is "wasted"
Wasted energy is eventually transferred to the
surroundings , which become warmer. The
wasted energy energy becomes increasingly
spread out and so becomes less useful
Calculating Efficiency
Efficiency= useful energy out/ total energy in (*100%)
Efficiency= useful power out/ total power in (*100%)