# What is the law of conservation of energy?

What is the law of conservation of energy?

Answer: The law of conservation of energy states that energy cannot be created or destroyed, but can only be transformed from one form to another. In other words, the total energy of a closed system remains constant over time, even though energy may be transferred from one object to another or converted from one form to another.

## Related questions

Description : Can you help me understand "Law of Conservation of Matter and Energy”?

Last Answer : Welcome to premature enlightenment! You can't add more energy or mass. All of the heavy elements (e.g., anything with an atomic number higher than lithium IIRC) was created in supernova. We can convert matter ... through E = mc^2), not the objects or people themselves. Dust to dust, and all that.

Description : Law of Conservation of Energy is put for- ward by?

Last Answer : Albert Einstein (E =mc2 (m = mass; C = Velocity of light)

Description : Where did the energy come from, for the big bang? Wouldn't this be a violation of law of conservation of energy?

Last Answer : I’m gonna go ahead and assume that if you can answer that question, you will probably find yourself named one of the greatest minds of our time.

Description : The law of conservation of mechanical energy is valid a.Irrespective of the nature of force field b.Only in gravitational field c.Only if the total work done by the particle in moving around in a closed trajectory is zero d.Only if the force is tangential to the trajectory e.None of the above

Last Answer : c. Only if the total work done by the particle in moving around in a closed trajectory is zero

Description : Coulomb's law for the force between electric charges most closely resembles a.Newton's laws of motion b.Law of conservation of energy c.Gauss's theorem d.Newton's law of gravitation e.None of the above

Last Answer : d. Newton's law of gravitation

Description : The statement that the sum of the kinetic and potential energies of a particle in the earth's gravitational field is constant is known as a.Principle of conservation of mechanical energy b.Law of gravitation c.Newton's law d.Principle of conservation of momentum e.Law of nature

Last Answer : a. Principle of conservation of mechanical energy

Description : Explain the Law of conservation of energy with pendulum. -Physics 9th

Last Answer : Law of conservation of energy state that energy can neither be created nor be destroyed it can only be converted into one form to another form. Now, let us consider a pendulum in which to ... pendulum to overcome the friction is gained by surrounding, So total energy of system will remain conserved.

Description : How are the law of conservation of energy and the law of conservation of mass similar?

Last Answer : In both cases, something is conserved - it doesn't change overtime.Also, mass and energy are equivalent. If something has energy,it has mass, and vice versa.

Description : What the different between the law of conservation of energy and conserving energy?

Last Answer : The law of conservation of energy states that the total energyin the universe is a constant and will remain so for example (x=y+z ). conservation of energy has to do with reducing the amountof energy used through reduced activity and/or increased efficiencyin the performance of a particular task.

Description : What about matter can change and what does not change according to the law of conservation of energy?

Description : How is the law of conservation of energy relate to energy transformation?

Last Answer : The law of conservation of energy states: "Energy can neither becreated or destroyed, only changed in form." Energy transformationis changing it's form.Note: This law only holds in Newtonian physics. I Einsteinianphysics is isn't valid.

Description : The law of conservation of energy states that energy can be created or destroy as long as its done by a conservation force?

Last Answer : false The law of conservation of energy (also known as the 1st law of thermodynamics) states that energy can neither be created nor destroyed. There is one caveat to that, however. If you ... release of electrical energy in some chemical reactions is too small to create a measurable mass defect.

Description : Why does a cannon recoil after firing? (1) Conservation of energy (2) Backward thrust of gases produced (3) NeMon's third law of motion (4) Newton's first law of motion

Last Answer : (3) NeMon's third law of motion Explanation: Recoil is the backward momentum of a gun when it is discharged. In technical terms, the recoil caused by the gun exactly balances the forward momentum of ... 's third law. In case of canons, the momentum is transferred to the ground through its mount.

Description : Which of the following laws validates the statement that matter can neither be created nor destroyed? (1) Law of conservation of energy (2) Le Chatelier's Principle (3) Law of conservation of mass (4) Law of osmosis

Last Answer : (3) Law of conservation of mass Explanation: The law of conservation of mass, also known as the principle of mass/matter conservation, states that the mass of an isolated system (closed to all ... out, its quantity cannot otherwise change over time (hence, its quantity is "conserved" over time).

Description : The first law of thermodynamics is simply the case of – (1) Charles law (2) Newton's law of cooling (3) The law of heat exchange (4) The law of conservation of energy

Last Answer : (4) The law of conservation of energy Explanation: The first law of thennodynamics is a version of the law of conservation of energy for thermodynamic systems. It states That the change in the internal energy of a system is equal to the heat added to the system plus the work done on the system.

Description : Kirchhoff's 2nd law is consequence of law of conservation of A. energy B. charge C. momentum D. power

Description : State the law of conservation of mass and energy.

Last Answer : Mass and energy are interchangeable. When mass is lost there is a substantial gain in energy and when energy is lost there is a increase in mass.

Description : The Navier-Stokes equation deals with the law of conservation of (A) Mass (B) Energy (C) Both (A) & (B) (D) Momentum

Description : Euler's equation of motion is a statement expressing (A) Conservation of mass (B) Conservation of energy (C) Newton's first law of motion (D) Newton's second law of motion

Last Answer : (A) Conservation of mass

Description : The first law of thermodynamics is a restatement of the law of conservation of (A) Mass (B) Energy (C) Momentum (D) None of these

Description : 1st law of thermodynamics is nothing but the law of conservation of (A) Momentum (B) Mass (C) Energy (D) None of these

Description : The first law of thermodynamics is a statement of conservation of (A) Heat (B) Momentum (C) Energy (D) Work

Description : Lenz's law results from the law of conservation of (A) Mass (B) Momentum (C) Energy (D) None of these

Description : Bernoulli equation deals with the law of conservation of (A) Mass (B) Momentum (C) Energy (D) Work

Description : Hydraulic brakes function on the principle of (A) Law of conservation of momentum (B) Law of conservation of energy (C) Pascal’s law (D) None of the above

Last Answer : (C) Pascal’s law

Description : Which of the following laws of thermodynamic which leads to the definition of entropy?  a. First law  b. Second law  c. Third law  d. Law of conservation of energy

Description : Which of the following laws of thermodynamic which leads to the definition of entropy?  a. First law  b. Second law  c. Third law  d. Law of conservation of energy

Description : The first law of thermodynamics is based on which of the following principles?  a. Conservation of mass  b. Conservation of energy  c. Action and reaction  d. The entropy-temperature relationship

Last Answer : Conservation of energy

Description : The 1st Law of Thermodynamics on what principle?  a. Conservation of Energy  b. Conservation of mass  c. Enthalpy  d. Isometric

Last Answer : Conservation of Energy

Description : Heat cannot be created, nor destroyed, but it can be changed from one form to another. The energy in the universe remains constant.  a. 1st Law of Energy Conservation  b. 2nd Law of Energy Conservation  c. 3rd Law of Energy Conservation  d. None of the above

Last Answer : 1st Law of Energy Conservation

Description : It states that mass is a commodity that can neither be heated nor destroyed with the exception of nuclear processes where the conversion of mass into energy is a fundamental principle  a. Law of ... Conservation of Energy  c. Law of Conservation of Power  d. Law of Conservation of Heat

Last Answer : Law of Conservation of Mass

Description : The first law of thermodynamics is based on which of the following principles?  a. conservation of mass  b. the enthalpy-entropy relationship  c. action – reaction  d. conservation of energy

Last Answer : conservation of energy

Description : What states that the net change in the total energy of the system during a process is equal to the difference between the total energy entering and the total energy leaving the system during ... Conservation of energy principle  C. Second law of thermodynamics  D. Conservation of mass principle

Last Answer : Conservation of energy principle

Description : What states that the net mass transfer to or from a system during a process is equal to the net change in the total mass of the system during that process?  A. Third law of thermodynamics  B. Conservation of energy principle  C. Second law of thermodynamic  D. Conservation of mass principle

Last Answer : Conservation of mass principle

Description : The first law of thermodynamics is the:  A. Law of conservation of momentum  B. Law of conservation of mass  C. Law of conservation of power  D. Law of conservation of energy

Last Answer : Law of conservation of energy

Description : The first law of thermodynamics is based on which of the following principles?  A. Conservation of mass  B. Conservation of energy  C. Action and reaction  D. The entropy-temperature relationship

Last Answer : Conservation of energy

Description : The total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as  A. law of equipartition of energy  B. law of conservation of energy  C. law of degradation of energy  D. none of these

Description : The first law of thermodynamics is the law of  (a) conservation of mass  (b) conservation of energy  (c) conservation of momentum  (d) conservation of heat  (e) conservation of temperature.

Description : An ideal transformer always obeys the law of conservation of........: a. energy b. momentum c. charge d. Flux

Description : Lenz’s law is in accordance with the law of conservation of: a. momentum b. Angular momentum c. charge d. energy

Description : Kirchhoff 1st law is is manifestation of a. law of conservation of mass b. law of conservation of charge c. law of conservation of energy d. none

Last Answer : b. law of conservation of charge

Description : .As a wave travels down a spring, the amplitude slowly decreases. Why does this occur? A. The law of conservation of energy does not apply to waves. B. The energy is spread out along the entire ... due to friction as the particles in the spring rub against each other. E. all of the above

Last Answer : D. Some energy is lost due to friction as the particles in the spring rub against each other.

Description : Lenz's law is an example of the law of conservation of one of the following. Is it conservation of: w) mass x) charge y) momentum z) energy

Description : The first law of thermodynamics is concerned with the conservation of w) energy x) momentum y) charge z) matter

Description : Why does a cannon recoil after firing ? (1) Conservation of energy (2) Backward thrust of gases produced (3) Newton’s third law of motion (4) Newton’s first law of motion

Last Answer : Newton’s third law of motion

Description : The first law of thermodynamics is simply the case of (1) Charle’s law (2) Newton’s law of cooling (3) The law of heat exchange (4) The law of conservation of energy

Last Answer : The law of conservation of energy

Description : Which of the following laws validates the statement that matter can neither be created nor destroyed ? (1) Law of conservation of energy (2) Le Chatelier’s Principle (3) Law of conservation of mass (4) Law of osmosis

Last Answer : Law of conservation of mass

Description : A moving body on Earth ordinarily comes to rest by itself because of the (a) Law of inertia (b) Forces of friction (c) Conservation of momentum (d) Gravity