Mass-Energy Conversion

How much energy is equivalent to a stick of butter that is 0.1 kg?

• 3 * 10⁷ J

• 3 * 10¹⁵ J

• 9 * 10⁷ J

• 9 * 10¹⁵ J

The Sun converts mass to energy at such a rate that it produces 3.9 * 10²⁶ J of energy every second!

In order for this to occur, how much mass must be converted to energy every second?

• 1.3 * 10¹⁸ kg

• 1.17 * 10³⁵ kg

• 3.51 * 10⁴³ kg

• 4.33 * 10⁹ kg

An aspirin has a mass of 0.325 kg. If the mass of the aspirin could be completely converted to energy, how many joules of energy would be produced?

• 9.75 * 10⁷ J

• 1.08 * 10^-9 J

• 9.23 * 10⁸ J

• 2.93 * 10¹⁶ J

What does the "c" in E = mc² stand for?

• Energy

• Mass

• The speed of light

• Continuum

The total annual energy consumption of the United States is 1 * 10²⁰ Joules.

If you were capable of converting mass to energy with 100% efficiency, how much mass would you need to produce this much energy?

• 3.0 * 10²⁸ kg

• 9.0 * 10³⁶ kg

• 3.3 * 10¹¹ kg

• 1.1 * 10³ kg

Which of the following is true of fission?

• A heavy nucleus is combined with a smaller nucleus

• The sum of the two new nuclei is less than the mass of the original nucleus

• Mass is added during the reaction

• Energy is converted into mass

Which of the following is equal to the speed of light squared (c²)?

• 3 *10⁸ m/s

• 3 * 10¹⁶ m/s

• 9 * 10¹⁶ m/s

• 9 * 10⁸ m/s

Which scientist discovered that energy is equal to the mass of an object times the speed of light squared (E = mc²)?

• Niels Bohr

• Albert Einsteiin

• J.J. Thompson

• Ernest Rutherford

Which type of nuclear reaction do we currently use in our Nuclear Power Plants here on Earth?

• Fission

• Fusion

Which of the following is true of the E = mc² equation?

• A small amount of mass can be turned into a large amount of energy

• A small amount of energy can be turned into a large amount of mass

• Objects can travel faster than the speed of light

• Mass can never be converted into energy, or vice versa