Search over 10,000 free study notes

The photoelectric effect states that electrons are emitted when electromagnetic radiation is shone upon a material. It also provides evidence for the particle-nature of light, since each photon interacts ...

We are looking for what values of x make this statement true. To start we need to factorise the quadratic.We can do this in two ways, the quadratic formula, or just seeing what numbers work.We'll start wi...

Note the following rules for simultaneous equations: 'Same sign subtract' and 'alternate sign add'. The first thing we need to do is find either y or x. To do so here, you add the equations together becau...

Let x = 0.436363636...
10x = 4.36363636....1000x = 436.36363636...990x = 432x = 432/990 = 24/55

The chances of Alice winning a game is 0.7, therefore the chances of Bob winning a game is 0.3. To work out the probability of Alice winning exactly one game, the probabilities of Alice winning once and B...