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When we have 2 sides of a right angled triangle, we can use Pythagoras' Theorem to find the third missing side. This theorem states that if we label the hypotenuse (the side opposite the right angle) as <...

Answering any examination style question may appear to be a daunting task, however if you take time to carefully plan an essay before beginning to write, you will immediately notice that you are producing...

Magnesium oxide has a giant 3D lattice structure formed by strong electrostatic forces of attraction between the positively charged magnesium ions and the negatively charged oxygen ions. These ionic bonds...

The best practical advice I could give would be to ensure that you know your personal statement inside-out. At Cambridge they tend to give 2 interviews where one of the interviews will focus primarily upo...

The SA node initiates an impulse which travels across the atria causing them to contract and blood is forced actively into the ventricles. This is called atrial systole. The AV node then delays the impuls...