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Submarines submerge and surface by changing the average density of the hull.
A hot air balloon is a balloon aircraft which is lifted by hot air.
How can this pendulum accurately measure time in seconds?
Water boils at 100 degrees Celsius. But is it possible to boil water at room temperature?
The animation shows the way forces act on wheeled vehicles and vehicles with runners.
The length of the metal frameworks of bridges change when the temperature changes.
It is a well-known phenomenon that the sound of an approaching sound source is higher...
Surface tension is the property of a liquid that allows it to obtain the smallest surface...