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Mass–energy equivalence
E = mc²
Where: E = energy (J) / electric field (N/C), c = specific heat (J/kg·K) / speed of light, m = mass (kg)
Solved example
Given: c = 7, m = 5
Find: E (energy (J) / electric field (N/C))
- Formula: E = c²·m
- Substitute the values: E = 5·7²
- Result: E = 245 J
Answer: E = 245 J
Calculator
How to calculate Mass–energy equivalence
- Write down the formula: E = mc².
- Note the known values (c, m).
- Substitute them and simplify to find E.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for Mass–energy equivalence?
The formula is E = mc², where E = energy (J) / electric field (N/C), c = specific heat (J/kg·K) / speed of light, m = mass (kg).
What is Mass–energy equivalence when c = 7, m = 5?
E = 245 J. Substitute the values into E = mc² and simplify.