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Energy comes in many forms (e.g. chemical, potential, kinetic). We say that energy is transferred when it changes from one form to another. The conservation of energy means that in a closed system the amo...

We have been told that t = 5 in this particular question. So our first step is to simply 'swap out' the t in the above equation for the number 5, as we have been told they mean the same thing. This gives ...

An enzyme is a biological catalyst. It is a protein with an active site that binds to a substrate to accelerate a chemical reaction.

Selon moi, le gouvernement pourrait faire plus pour aider l'environnement en Angleterre et il aurait l'effet le plus grand pour l'aider. Il pourrait rendre obligatoire de recycler par exemple, parce que b...

Whilst both the imparfait and the passé composé refer to actions in the past, they are used in different situations. On the one hand, the imparfait is used in descriptions, to talk about a habit or a long...