1. What is the Relativity Energy Equation?

The mass-energy equivalence formula E=mc² is a famous equation from Albert Einstein's theory of special relativity. It states that energy (E) and mass (m) are interchangeable; they are different forms of the same thing.

2. How Does the Calculator Work?

The calculator uses the relativity equation:

Where:

• \( E \) — Energy (Joules)
• \( m \) — Mass (kilograms)
• \( c \) — Speed of light (299,792,458 m/s)

Explanation: The equation shows that a small amount of mass can be converted into a large amount of energy, as the speed of light squared is an enormous number.

3. Importance of E=mc²

Details: This equation revolutionized physics by showing that mass and energy are interchangeable. It has practical applications in nuclear power and understanding stellar processes.

4. Using the Calculator

Tips: Enter mass in kilograms. The result will be the equivalent energy in joules according to Einstein's equation.

5. Frequently Asked Questions (FAQ)

Q1: Why is c squared in the equation?
A: The c² term comes from the mathematical derivation of the equation from special relativity principles, representing the relationship between space and time.

Q2: How much energy is in 1 kg of mass?
A: Approximately 89,875,517,873,681,764 joules (about 90 petajoules), equivalent to the energy released by 21.5 megatons of TNT.

Q3: Can we convert all mass to energy?
A: In practice, only a small fraction of mass can be converted to energy (about 0.1% in nuclear fission, up to 0.7% in nuclear fusion).

Q4: Does this equation apply to all energy?
A: It describes the rest energy of an object. For moving objects, the full energy equation includes kinetic energy terms.

Q5: Why don't we see mass-energy conversion daily?
A: The conversion factor (c²) is so large that the energy changes in chemical reactions (which involve tiny mass changes) are negligible in everyday experience.