Top answers

Why is n^0 always 1 and not 0?

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=n n n n^2=(n^3)/n=n n...
JC
Answered by Joseph C. • Maths tutor
5022 Views

If the area of a rectangle is A, why is the area of a rectangle with lengths twice as long not 2A?

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 direction as we...
JC
Answered by Joseph C. • Maths tutor
3624 Views

What actually is current? Why does it differ from potential difference?

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 th...
JO
Answered by James O. • Physics tutor
7726 Views

How important is including historical context in an essay?

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 the...
SH
Answered by Sorcha H. • English tutor
4143 Views

I dont really understand the Rutherford experiment

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 with a...
ES
Answered by Eduardo S. • Physics tutor
3652 Views