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The points A and B have coordinates (2,4,1) and (3,2,-1) respectively. The point C is such that OC = 2OB, where O is the origin. Find the distance between A and C.

To find the distance between the points A and C, we want to find the magnitude of the vector AC. In order to do this, we must first find the vector AC, which we do by using their position vectors. We are giv...
SW
Answered by Sophie W. • Maths tutor
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What were the most significant social policy changes made by the Liberal governments from 1906 to the start of WWI?

From 1906-1914, Liberal governments in Britain introduced several major policy changes motivated by their desire to reduce poverty. The most significant changes fell into two categories: protecting vulnerabl...
EM
Answered by Elizabeth M. • History tutor
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Outline two assumptions of the Biological Approach to understanding human behaviour.

The Biological Approach to understanding human behaviour has many assumptions, two of which I will outline. The first of these is the assumption that behaviour and thought are linked to the structure of the ...
GR
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How do I get better at organic synthesis?

I don't think i've ever taught an A-level chemistry student that hasn't said this at some point. Because it is the part of chemsitry (in my opinion) that seems the most daunting. I generally wait until towar...
RC
Answered by Richard C. • Chemistry tutor
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How far do you agree with the view that superpower misjudgements account for the development of the Cold war in the years 1945-53? (Taken from exam paper)

The development of the Cold War in the years 1945-53 can be accredited to an interplay of various factors as various historians have provided different interpretations. In source 7, Martin McCauley suggests ...
JG
Answered by Juvan G. • History tutor
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