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OCR M2 A level maths June 2015 question 8

  1. In circular motion F = mv2/rPlug numbers in ... 6 = 0.4* v2 / 0.6 ... and rearrange for v = plus or minus 3. Velocity is a vector so it doesn't matter which value you take as i...
JS
Answered by Joe S. Maths tutor
3538 Views

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 defin...

BT
Answered by Bridget T. Geography tutor
2639 Views

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 differentiat...

KJ
Answered by Krystian J. Maths tutor
12051 Views

Explain how a catalyst can effect the rate of a forward and reverse reaction.

A catalyst can provide a different mechanism or pathway for a chemical reaction through stabalistion of the transition state. The catalyst will lower the activation energy of the reaction meaning a greate...

KN
Answered by Kieran N. Chemistry tutor
4465 Views

Palladium acts as a heterogeneous catalyst in the reaction between an alkene with hydrogen by providing an alternative reaction route. Describe the stages of this reaction route. (3 marks)

The detail required for many A-level questions is indicated in the number of marks available. As this question awards 3 marks, 3 separate points must be made. For example, the first stage of a heterogeneo...

AS
Answered by Amy S. Chemistry tutor
2351 Views

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