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They key thing to remember is P.E.E (Point, Evidence, Explanation). In your introduction you should start of introducing what you are going to discuss. Then each paragraph should be a different point, for...

English: Present continuous to talk about the future - I am going to go... 

French: Present to talk about the future - Je vais aller... 

In diamond, each carbon atom forms 4 strong covalent sigma bonds with other carbons, resulting in a tetrahedral 3D arrangement of atoms where all the electrons are fixed in place or localised. In graphite...

The first thing to do as with any mechanics question is draw a force diagram with the weight (mg), the friction (F) and the normal reaction (R). As we are finding the smallest coefficient of friction poss...

First we need to change the limits, and by plugging in 1 and 0 to our substitution we find that the limits for u are arctan(1) and arctan(0) (or pi/4 and 0). Then we need to substitute for dx, and by diff...