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OCR M2 A level maths June 2015 question 8

In circular motion F = mv 2 /rPlug numbers in ... 6 = 0.4* v 2 / 0.6 ... and rearrange for v = plus or minus 3. Velocity is a vector so it doesn't matter which value you take as it will go round the same cyl...
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Answered by Joe S. • Maths tutor
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How do I write a concise but high-scoring introduction for an A2 essay?

Your introduction should usually consist of four different components. Let's deconstruct this using the question 'Can globalisation narrow the gap between rich and poor?' Firstly, it is important to define a...
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Answered by Bridget T. • Geography tutor
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Why would you use a subjunctive in this sentence? "Quiero que venga conmigo."

The subjunctive refers to a mood that deals with any form of uncertainty, as opposed to the indicative which deals with certainty and factual actions. "Quiero que venga conmigo" expresses a desire ...
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Answered by Benjamin S. • Spanish tutor
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Find the integral of xcos(2x) with respect to x

You can see that this question is asking you to do integration by parts. Remember that the integral of uv' is equal to uv - the integral of u'v. You want to find a u that gets easier when you differentiate i...
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Answered by Krystian J. • Maths tutor
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Describe the difference between respiration and breathing.

Respiration - the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in ce...
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Answered by Shivani S. • Biology tutor
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