Search over 10,000 free study notes

Anything raised to the zeroth power is a difficult thing to get your head around. The easiest explanation (not a full proof) is to look at what happens as we go down in powers of n: n^3=nnn      ...

This is because you are doubling both the length of the rectangle and its width. If it were extended by a factor of 2 in only one direction then its are would be 2A. Extending it in the other dir...

Current is defined as 'the flow of electric charge'. It can be broken down into very simple system of electrons, who carry charge, moving around a circuit. Potential difference can be thought of the force...

Short answer? Very. A piece should seldom be viewed in isolation from the context it was written in. It is important to be aware of any important historical events which may have influenced the author in ...

Rutherford revolutionised the atomic model with this experiment. At that time, the general idea was that of JJ Thompson, the  "plum pudding" atomic model. Rutherford bombarded a sheet of gold wi...