Search over 10,000 free study notes

With equations like this the most important thing is that you end up with all the numbers on one hand side and all the letters on the other side. People often think there is a 'right' and 'wrong' order to...

1. The number 'in front of' an unknown is called the Coefficient. When eliminating an unknown, look to see whether the coefficients of x are the same in both equations, or if the coefficients of y are ...

Alike atoms, protons are also made of smaller particles - mesons. When protons are at very close distance mesons are bonded together by the Strong Nuclear Force, which is stronger than the Electric Force,...

An elastic collision is a collision where objects will bounce after they hit each other. For example balls in a pool game bounce after heating each other. For an elastic collision, Mechanical Energy Kinet...

In French, both le passé simple and l'imparfait are used for past situations. However, they are not used the same way.

Le passé simple is used for short, sudden actions such as :

"Out o...