Mass–energy equivalence (rest energy) (E₀ = mc²)
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E₀ = mc²
What each symbol means
| Symbol | What it stands for |
|---|---|
| c | Speed of light in vacuum |
| m | Rest mass (kg or u) |
| E_0 | Rest energy (J or MeV) |
When to use this
Particle at rest; ignores kinetic energy.