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The second law of thermodynamics

The educational resource shows an interactive animation about the second law of thermodynamics for heat engines: it is not possible to achieve perpetual motion based on continuous reciprocal conversio ...

tables and graphs in accelerated movements

Concept of tables and graphs in accelerated movements

Physical magnitudes

Definition of physical magnitudes

Conversion factors

Concept of conversion factors

Comets

The educational resource shows a visual about the comets: Comets are small bodies, generally measuring less than 100 km in diameter. They tend to be made principally of ice. When they near the Sun, t ...

The planets

The educational resource shows a visual about the planets: in addition to our planet, there are another eight planets travelling around the sun.

Efficiency of a machine

Efficiency is a concept associated with work done by machines.In Physics this concept is defined as the quotient between the useful work done by the machine in a given interval of time and the total w ...

Solar eclipse

The educational resource shows a visual about the eclipses: eclipses of the sun and moon are caused by the moon crossing between the sun and the earth (solar eclipse) or by the earth crossing between ...

instantaneous acceleration

Concept of instantaneous acceleration

Change of phase

The educational resource shows an interactive animation about the change of phase: solids melt when they are heated and liquids evaporate, changing to a gaseous state. If you increase the vibration of ...

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