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The solar system (II)

The educational resource shows a visual: it is a simulation of the solar system, you can select the planet you want to see and also vary the plane of the orbits.

Conservation of energy (II)

The principle of conservation of energy states that energy is neither created nor destroyed; it is just transformed from some types of energy into others. The following visual will help you to underst ...

Conservation of energy (I)

The theorem of conservation of mechanical energy states that the work carried out on a body is invested exactly in increasing some type of energy. When a there are only conservative forces in a system ...

The commerce system

To apply the monetary system in use to everyday buying and selling situations and to product exchanges.

What is work? (II)

Work is one of the ways of transmitting energy between bodies. The following visual will help you understand the concept of work by modifying the force and the angle which it forms with the horizontal ...

What is energy?

A picture shows some transformations of energy. The energy from the sun passes to plants, to oil, to coal, to animals and to human beings; they take advantage of it by using the energy from oil, anima ...

Mechanical energy

Mechanical energy is what is produced by mechanical type forces, like elastic and gravitational forces.The following three pictures show situations involving mechanical energy.

Power (II)

Power measures the speed with which work is done. It is measured in watts, W, in the International System of Units. The following visual will help you to understand this concept more clearly as you se ...

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