Which of the following scenarios correctly demonstrates the transformation of mass into energy as given by Einstein's equation, E = mc2?
1) When hydrogen is fused into helium, whether in the Sun or in a nuclear bomb, the mass difference is turned into energy.
2) An object accelerated to a great speed has a lot of kinetic energy.
3) A mass raised to a great height has a lot of gravitational potential energy.
4) When you boil a pot of water, it has a high heat content, or thermal energy.
5) A burning piece of wood produces light and heat, therefore giving off radiative and thermal energy.