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La France est le pays qui accueille le plus de touristes internationaux du monde, et le tourisme contribue environ 7,5% au PIB (prodiut intérieur brut) du pays. Le tourisme est donc bien évidemment un ato...

This is a great example of where physics and our gut feelings about physics don't match up. This is a very common conceptional difficulty students have and is often jumped on by examiners. The best way to...

So we have y = 0 and therefore x² - 6x - 16 =0 

This is then factorised to (x+2)(x-8) = 0 and therefore we have x = -2, x = -8

To find the gradient we need to find dy/dx

So...

Generally, the imperfect tense should be used for events which happened regularly in the past or which took place over a period of time. The perfect tense is used more for one off events. So for example, ...

The Advantages are: 

Leads to effective, strong and stable government

Provides a clear link between MPs and their constituents

Prevents a minority party holding an ex...