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Always. No exceptions are known.

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14y ago

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Is machanical energy always conserved?

No. Total energy is always conserved, but not so mechanical energy.


Is the total energy conserved in an inelastic collision?

In an inelastic collision, the total energy is not conserved because some of the kinetic energy is transformed into other forms of energy, such as heat or sound.


The total amount of energy before and after a chemical reaction is the same .Thus energy is what?

Energy is conserved in a chemical reaction, meaning the total amount of energy before and after the reaction remains constant. This principle is known as the law of conservation of energy.


What is the conserved sum of the potential and kinetic energy?

Total energy.


Is the total energy of the car always conserved?

Basically, in physics, total energy is always conserved. Of course, it is possible for some of the energy from a car to go somewhere else.


Is kinetic energy conserved in an elastic collision?

Yes, kinetic energy is conserved in an elastic collision, meaning the total kinetic energy before the collision is equal to the total kinetic energy after the collision.


Will the total energy of a vibrating body is conserved if friction occur?

Energy is always conserved. When friction is present, the energy usually just turns into heat.


Is it true that total energy is always conserved?

Yes, total energy is always conserved in a closed system, according to the law of conservation of energy. Energy can change forms within a system (e.g., potential energy to kinetic energy), but the total amount of energy remains constant.


He total amount of energy before and after a chemical reaction is the same. Therefore energy is .?

Conserved. Energy cannot be created or destroyed, it can only change forms.


In a collision what is conserved?

Momentum is conserved in a collision. If two cars have the same mass and are traveling at the same speed and collide headfirst, the momentum of both cars cancel each other out and they will be motionless. If one has greater speed or mass than the other, it will still have the difference in momentum after the collision.


When is kinetic energy conserved in a system?

Kinetic energy is conserved in a system when there are no external forces acting on the system, meaning that the total amount of kinetic energy remains constant.


What is conserved sum of potential and kinetic energy?

The sum of potential and kinetic energy is called "mechanical energy". This is NOT conserved, though - unless you consider the microscopic scale, in which case (for example) heat energy is a type of kinetic energy. In this case, the sum is simply the total energy, and the total energy IS conserved.