Top answers

What is a depression?

A depression is a weather system of low pressure which moves across the British Isles from west to east. It involves two air masses which meet at a front. The air masses are tropical maritime which brings wa...
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Answered by Emma H. • Geography tutor
3499 Views

What are ionic bonds?

Ionic bonds are electrostatic forces of attraction between oppositely charged ions.
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Answered by Emma H. • Chemistry tutor
2650 Views

Differentiate xcos(x) with respect to x

We have two functions multiplied together: x and cos(x). Therefore we have to use the product rule. First differentiate x and leave cos(x) untouched, so we get 1(cos(x))=cos(x). Then differentiate cos(x) and...
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Answered by Ioannis L. • Maths tutor
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How do enzymes work?

Enzymes are molecules in the body that break down specific substrates which can then be used for energy or stored. An enzyme contains an active site that is complementary in shape to the substrate being brok...
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Answered by Emma H. • Biology tutor
3158 Views

How do I approach Bach Chorales?

Bach Chorales may not be the most exciting thing to do, but there are many ways to make the whole concept less daunting, and make your Chorales better in the process! What more can you need? Here are some ti...
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Answered by Heather P. • Music tutor
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