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What is entropy

Energy that cannot do work, often compared to the disorder of a system. Total entropy can never decrease.

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Answered by Andrew G. Chemistry tutor
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What is electricity

A transfer of energy via a current

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Answered by Andrew G. Physics tutor
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What is magnetism?

A force between moving charges

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Answered by Andrew G. Physics tutor
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What is calculus?

Finding the gradient or area underneath a graph

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Answered by Andrew G. Maths tutor
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How do I start analysing language use in texts in exams?

While the texts are unseen, you can plan your exam analysis technique before you get into the exam. The AQA mark scheme in 2017 does a good job of breaking down what's important to include. First, close a...

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