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At short distances between the nucleons at roughly 3 femtometers or so, the strong nuclear force between two nucleons begins to overcome the electrostatic repulsion (if both or one nucleon is a proton). The ...

There are 3 different outcomes for the fate of our universe:if the average density is smaller than what is known as the critical value, then the universe will carry on expanding forever.if the average densit...

The centre of gravity (or centre of mass) of an object is the point through which an object's weight will act through. In other words, the object will always balance around this point. Imagine a square book;...

Olbers' Paradox is a famous problem which baffled many scientists in the early 19th century. The German astronomer Olbers (and many of his colleagues) made assumptions that the universe was static, of infini...

Capacitors are an electrical component made up of two plates with an insulator between them. Electrons flow onto one of these plates as current flows around the circuit. This gives one of the plates a negati...