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Barometer

Concept of barometer. The atmospheric pressure is measured with a device called a barometer.

Forces of adhesion

Concept of adhesion forces. Adhesion forces are called the force of attraction among molecules of different substances.

Machines are elements we constantly use in our daily life. But, apart from having all types of uses, they can also work in many ways (on which the knowledge about energy is important). We have to trai ...

pressure (I)

Didactic unit on the pressure for 4th Secondary Education. What is pressure? How does it work? Units Hydrostatic pressure . Mathematical expression .The pressure increases the deeper you go in liqu ...

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