1. What is the Energy-Mass Equivalence?

The energy-mass equivalence principle states that mass can be converted into energy and vice versa, as described by Einstein's famous equation E=mc². For atomic mass units (amu), the conversion factor is approximately 931.494 MeV per amu.

2. How Does the Calculator Work?

The calculator uses the energy-mass equivalence formula:

Where:

• \( AMU \) — Atomic mass units (1 for sodium)
• \( 931.494 \) — Conversion factor (MeV per amu)

Explanation: This calculation shows the energy equivalent to the mass of 1 atomic mass unit of sodium according to Einstein's mass-energy equivalence principle.

3. Importance of Energy Calculation

Details: Understanding mass-energy equivalence is crucial in nuclear physics, particle physics, and understanding nuclear reactions and binding energies.

4. Using the Calculator

Tips: Enter the atomic mass units (default is 1 for sodium). The calculator will show the energy equivalent in MeV (mega-electron volts).

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 931.494 MeV/amu?
A: This comes from Einstein's E=mc², where 1 amu (1.660539×10⁻²⁷ kg) converted to energy gives approximately 931.494 MeV.

Q2: Does this value change for different elements?
A: No, the conversion factor is the same for all elements as it's based on the mass-energy equivalence principle.

Q3: What is the energy equivalent of 1 amu in joules?
A: Approximately 1.492418×10⁻¹⁰ joules (1 amu × c²).

Q4: How is this used in nuclear physics?
A: This conversion is fundamental in calculating nuclear binding energies and understanding nuclear reactions.

Q5: Why is sodium specifically mentioned?
A: The calculator can be used for any element, but sodium is given as a reference example (1 amu).