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A hot air balloon is a balloon aircraft which is lifted by hot air.
How does a piece of a cork behave on the surface of a glass of water? You can examine that in...
Direct action pumps and suction pumps are among the simplest water pumps.
A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
The length of the metal frameworks of bridges change when the temperature changes.
These great scientists had a tremendous impact on the advancement in physics.
Find out whether the marble reaches the finish line faster on the straight or on the curved slope.
Find out how to move the straws without touching them, using the phenomenon of resonance.