Archimedes' seesaw

In this experiment, we use buoyancy to study the balance of two glasses of water.

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Submarine operation

Submarines submerge and surface by changing the average density of the hull.

The faithful cork

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Surface tension

Surface tension is the property of a liquid that allows it to obtain the smallest surface...

Exceeding the speed of sound

What is the speed of sound? What happens when an object exceeds the speed of sound?

Properties of matter: mass, volume and density

In certain cases, liquids do not mix together, and form layers instead. See what happens when we...

Suction pumps and direct action pumps

Direct action pumps and suction pumps are among the simplest water pumps.

Simple harmonic motion and uniform circular motion

Simple harmonic motion can be considered to be the one-dimensional projection of uniform...

Thermal expansion of bridges

The length of the metal frameworks of bridges change when the temperature changes.

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