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Do you have any tips for learning vocab?

Learning vocabulary is a big part of learning a new language but there are lots of ways that you can make this easier for yourself. Creating a sentence with the new word in or drawing a picture of it can hel...
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Answered by Charlotte S. • German tutor
2759 Views

Why do French adjectives change their ending? (e.g. actif/active)

Each French noun (an object word such as 'boy', 'table' or 'river') has a gender - they are either masculine or feminine. This may seem strange to a native English speaker as this is not a feature of our lan...
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Answered by Charlotte S. • French tutor
18070 Views

Explain how nerve transmission occurs at the synapse.

As an action potential arrives at the presynaptic knob, the membrane is depolarised. This causes calcium channels in the membrane to open and calcium ions to flood in. This influx of calcium causes vesicles ...
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Answered by Abigail H. • Biology tutor
2902 Views

How do I differentiate a quadratic to the power n?

To do this we will use the chain rule, whereby dy/dx = dy/du * du/dx. So if y = (ax^2+bx+c)^n then we will say that u = ax^2+bx+c. Therefore y =u^n. So to find dy/dx we differentiate u with respect to x, whi...
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Answered by Alex A. • Maths tutor
5974 Views

Outline the principal features of a geostationary orbit and use them to explain one use of satellites in this type of orbit.

Geostationary orbits: -have a time period of 24 hours -have an angular speed equal to that of the Earth - maintain above a fixed position on the Earth's surface at all times. Therefore, they are very good fo...
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Answered by Alex A. • Physics tutor
17195 Views