Energy FAQs:


Q: Is energy the property that must be transferred to an object in order to perform work on – or to heat – the object?

A: Yes, and can be converted in form, but not created or destroyed.

Q: Is energy an attribute of a substance as a consequence of its atomic?

A: Yes, and molecular or aggregate structure.

Q: Is energy defined in terms of the energy operator as a time derivative of the wave function?

A: Yes.

Q: Is energy a scalar quantity?

A: Yes, and the canonical conjugate to time.

Q: Is energy a varying mix of both potential and kinetic energy?

A: Yes.

Q: Is energy frame dependent?

A: Yes.

Q: Is energy dissipated into empty energy states available in a volume?

A: Yes, and from which it cannot be recovered into more concentrated forms , without degradation of even more energy.

Q: Is energy the quantity which is canonical conjugate to time?

A: Yes.

Q: Is energy a consequence of the fact that the laws of physics do not change over time?

A: Yes.

Q: Was energy also first postulated in the early 19th century?

A: Yes, and applies to any isolated system.

Q: Is energy transferred between the surroundings and the reactants of the reaction in the form of heat or light?

A: Yes, thus the products of a reaction may have more or less energy than the reactants.

Q: Is energy used to convert ADP into ATP?

A: Yes.

Q: Is energy the joule?

A: Yes, and named after James Prescott Joule.

Q: Is energy also transferred from potential energy to kinetic energy and then back to potential energy constantly?

A: Yes.

Q: Is energy minuscule?

A: Yes, and which is why a loss of energy from most systems is difficult to measure on a weighing scale, unless the energy loss is very large.

Q: Is energy constant unless energy is transferred in or out by work or heat?

A: Yes, and that no energy is lost in transfer.

Q: Is energy a conceptually and mathematically useful property?

A: Yes, as it is a conserved quantity.

Q: Is energy triggered and released in nuclear fission bombs or in civil nuclear power generation?

A: Yes.

Q: Is energy the direct mathematical consequence of the translational symmetry of the quantity conjugate to energy?

A: Yes, and namely time.

Q: Is energy the sum of all microscopic forms of energy of a system?

A: Yes.

Q: Is energy each greater than or equal to zero because they are measured in comparison to a base state of zero energy: "no wave"?

A: Yes, and "no motion", and "no inertia", respectively.

Q: Is energy then transformed into sunlight?

A: Yes.

Q: Is energy released that was originally "stored" in heavy isotopes?

A: Yes, and by nucleosynthesis, a process ultimately using the gravitational potential energy released from the gravitational collapse of supernovae, to store energy in the creation of these heavy elements before they were incorporated into the solar system and the Earth.

Q: Is energy closely related?

A: Yes.

Q: Is energy thus equally split between kinetic and potential?

A: Yes.

Q: Is energy also expressed in many other units not part of the SI?

A: Yes, such as ergs, calories, British Thermal Units, kilowatt-hours and kilocalories, which require a conversion factor when expressed in SI units.

Q: Is energy transferred among objects in certain ways during the occurrence of a given process?

A: Yes.

Q: Is energy strictly conserved and is also locally conserved wherever it can be defined?

A: Yes.

Q: Is energy transformed to kinetic energy and thermal energy in a very short time?

A: Yes.

Q: Is energy thus often said to be stored by cells in the structures of molecules of substances such as carbohydrates?

A: Yes, and lipids, and proteins, which release energy when reacted with oxygen in respiration.

Q: Is energy transferred between systems by any mechanism?

A: Yes, and an associated mass is transferred with it.

Q: Is energy not always clear-cut?

A: Yes.

Q: Is energy a macroscopic notion?

A: Yes, and closer examination shows that it is really the sum of the potential and kinetic energy on the atomic and subatomic scale.

Q: Are energies often measured as positive or negative depending on whether they are greater or less than the energy of a specified base state or configuration such as two interacting bodies being infinitely far apart?

A: Yes.

Q: Is energy expressed using the Hamiltonian operator?

A: Yes.

Q: Is energy an attribute of all biological systems from the biosphere to the smallest living organism?

A: Yes.

Q: Is energy zero and the gravitational potential energy is at maximum?

A: Yes.

Q: Is energy at maximum and is equal to the decrease of potential energy?

A: Yes.

Q: Is energy the joule?

A: Yes, and which is the energy transferred to an object by the mechanical work of moving it a distance of 1 metre against a force of 1 newton.

Q: Is energy a mathematical consequence of translational symmetry of time?

A: Yes, and a property of most phenomena below the cosmic scale that makes them independent of their locations on the time coordinate.

Q: Is energy also captured by plants as chemical potential energy in photosynthesis?

A: Yes, when carbon dioxide and water are converted into the high-energy compounds carbohydrates, lipids, and proteins.