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How should I structure my essays?

I always prioritise having a really bulletproof, strong structure - especially in the time constraints of a exam. I like to come up with my subtitles before I start writing, both to make sure I cover all the...
SC
Answered by Stephen C. • History tutor
2446 Views

What is the difference between voltage and current?

The voltage (or potential difference ) between two points is the cost in energy to move a unit of positive charge from the point of lower potential to the point of higher potential. Current is the rate of fl...
DW
Answered by Daniel W. • Physics tutor
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How do I solve simultaneous equations that aren't linear, for example x^2 + 2y = 9, y = x + 3

First, let's start by labelling the equations. We can call x 2 +2y=9 equation 1 and y=x+3 equation 2. Rearrange equation 2 to give us x = y-3. We can then substitute this back into equation 1. So we get (y-3...
EM
Answered by Esther M. • Maths tutor
2848 Views

Which factors affect supply and demand?

Factors affecting Supply:-Exchange Rates if it is an international business-Price of commodity-Government policies, e.g. taxation Factors affecting Demand:-Consumer taste-Consumer income-Changes in price of ...
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Answered by Aneeq K. • Economics tutor
2781 Views

Explain how we can increase the rate of a chemical reaction.(6 marks)

-Increase the concentration (pressure in gases). (1) This increases the likelihood and frequency of collision because the particles of reactant will be closer together (1)-Increase the temperature(1). This i...
AO
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