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Learn how to pierce a balloon without popping it.
This lesson presents the concepts of density and buoyancy through the operation of the...
Direct action pumps and suction pumps are among the simplest water pumps.
The animation shows the way forces act on wheeled vehicles and vehicles with runners.
This lesson explains the concept of atmospheric pressure.
This lesson helps to understand the Doppler effect.
In this experiment we prove that it is possible to cut a bottle with just a string.
Can we break a stick with the weight of only a few sheets of paper?