Why is there a loss in energy conservation?

The most people come into contact with in their daily lives is a variety of different energies, and it is precisely because of energy that the world can operate, and human beings can carry out various activities because of energy. We often say that matter and energy in this world are conservedBut why is there a loss in the conservation of energy? One concept that we need to be clear about is that the loss of energy does not mean that the energy is gone, but that the lost part of the energy exists in another way, and the way of existence is different from the original form of energy.

For example, when we are cooking, the firewood burns to produce heat energy, but these heat energy can not be completely applied to the cooking, which will lose most of the energy, these lost abilities or lost when the heat transfer with the surrounding air, and part of the firewood itself does not completely react, but that part of the ability still exists in the firewood. In addition, when the car is in motion, the friction between the tire and the ground consumes a part of the energy, which is also considered the energy lost, and there is also some friction inside the car, the friction with the air, and the mileage of the car can be calculated only after the energy is eliminated. <>

Conservation of energy. It is the law of this material world, there will be different forms of loss of energy in the process of various transformations, and the loss of energy still exists, and the loss we are talking about is only because this part of the energy is not fully utilized, but we must also admit their existence. <>

People do a variety of activities every day, such as feeding, exercising, using electricity, etc., which may consume biomass energy when carried out.

Mechanical energy, electrical energy, etc., and some lost energy is mostly lost in the form of heat energy, and this part of the lost energy will be converted into various energy under the action of other organisms, and the energy cycle will be carried out through the activities of other organisms.

Friction, air resistance and other factors in motion will cause energy loss, and it is precisely because of the loss that the correctness of energy conservation can be more proved.

The conservation of energy and the loss are not contradictory, because this loss is also a type of energy, but only in terms of relatively useful energy conversion. For example, if you push a ball on the ground with your hand, the hand gives the ball a push to make the ball generate power to roll on the ground, but the speed is getting slower and slower, because part of the power is converted into heat energy due to the friction between the ball and the ground in the process of rolling, and this part of the heat energy is the so-called "loss". Energy neither comes into thin air nor disappears out of thin air, it simply transforms from one form to another.

Conservation of energy means that energy does not appear or disappear out of thin air, but only transforms into another kind of energy, and the so-called loss is because this part of the energy becomes energy that cannot be used in other forms.

In reality, there are many other forces, such as gravity, drag caused by air friction, etc.

The sum of the energies of all reactants is equal to the sum of the clearing energies of all the products.

The specific applications of conservation of energy are as follows:

1. When the elevator descends and rots, the energy of the elevator and its passengers is gradually converted from potential energy to kinetic energy, although in the whole process of the elevator descending, the form of energy is changing, the total energy of the elevator and passengers, that is, the sum of potential energy and kinetic energy is fixed, when the elevator descends, the speed and kinetic energy increase, and the potential energy defense crack is decreasing;

2. In electrochemistry, the electrical energy and chemical energy generated in the battery are converted into each other, and the total energy remains unchanged;

3. In biology, the total energy generated by human movement is converted into human internal energy, the ambient temperature to maintain cell homeostasis, and the heat energy released to the external environment.