Question

2. How does energy affect the movement of particles? a. The more energy the slower the particles move b. The less energy the faster the particles move C. The more energy there is no movement at all d. The less energy the slower the particles move​

Answer 1

Respuesta:

                     THE ENERGY                      

Energy has been a key piece for the development of humanity. Man, from the beginning of his existence, has needed energy to survive and advance. But what is energy and why is it so important?

Energy is the ability of bodies to do work and produce changes in themselves or in other bodies. That is, the concept of energy is defined as the ability to make things work.

The unit of measurement that we use to quantify energy is the joule (J), in honor of the English physicist James Prescott Joule.

Types of energy

Energy manifests itself in different ways, thus receiving different names depending on the actions and changes it can cause.

Mechanical energy

Mechanical energy is that related to both the position and the movement of bodies and, therefore, involves the different energies that a moving target has, such as kinetic and potential energy. Its formula is:

Em = Ep + Ec

Where Em is the mechanical energy (J), Ep the potential energy (J) and Ec the kinetic energy (J).

Potential energy refers to the position of a mass in space. Its formula is:

Ep = m · g · h

Where m is the mass (kg), g the gravity of the Earth (9.81 m / s2), h is the height (m) and Ep the potential energy (J = Kg · m2 / s2).

Kinetic energy, for its part, is manifested when bodies move and is associated with speed. It is calculated with the formula:

Ec = ½ m · v2 Where m is the mass (Kg), v the velocity (m / s) and Ec the kinetic energy (J = Kg · m2 / s2).

Internal energy

Internal energy manifests itself from temperature. The hotter a body is, the more internal energy it will have.

Electric power

When two points have a potential difference and are connected through an electrical conductor, what we know as electrical energy is generated, related to electrical current.

Thermal energy

It is associated with the amount of energy that passes from a hot body to a colder one, manifesting itself through heat.

Electromagnetic energy

This energy is attributed to the presence of an electromagnetic field, generated from the movement of electric and magnetic particles moving and oscillating at the same time. They are what we know as electromagnetic waves, which propagate through space and travel at the speed of light.

The Sun is an example of electromagnetic waves that can manifest as light, infrared radiation, and also radio waves.

Chemical energy

Chemical energy manifests itself in certain chemical reactions in which chemical bonds are formed or broken. Coal, natural gas or the operation of batteries are some examples of the use of this energy.

The nuclear energy

Nuclear energy is what is generated when atoms interact with each other. It can be released through breaking, which is known as fission, or by joining, which is called fusion.

Energy properties

Energy has 4 basic properties:

Becomes. Energy is not created, but is transformed and it is during this transformation that the different forms of energy are manifested.

Is preserved. At the end of any energy transformation process there can never be more or less energy than there was at the beginning, it is always maintained. Energy is not destroyed.

Is transfered. Energy passes from one body to another in the form of heat, waves, or work.

Degrades. Only part of the transformed energy is capable of producing work and the other part is lost in the form of heat or noise (unwanted mechanical vibrations).

Energy transfer

There are three main ways to transfer energy from one body to another:

Job

When work is done, energy is passed to a body that changes from one position to another. As it happens, for example, if we push a box to move it: we are doing work so that its position varies.

Waves

Waves are the propagation of disturbances of certain characteristics, such as the electric field, magnetism or pressure. As they move through space they transmit energy.

Hot

It is a type of energy that is manifested when energy is transferred from a warm body to a cooler body. This energy can travel in three main ways:

Conduction: when one end of a material is heated, its particles vibrate and collide with neighboring particles, transmitting part of their energy to them.

Radiation: heat propagates through waves of infrared radiation (waves that propagate through a vacuum and at the speed of light).

Convection: which is typical of moving fluids (liquid or gaseous).

Learn by playing! This game helps you understand energy transfer in a simple way.