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The line AB has equation 5x + 3y + 3 = 0 and it intersects the line with equation 3x - 2y + 17 = 0 at the point B. Find the coordinates of B.

Two straight lines can intersect at only one point. To identify the point at which the lines cross, we make a simultaneous equation, and solve x and y from here, by firstly writing one equation on top of the...
JM
Answered by Jamie M. • Maths tutor
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What are the stages in the conduction of a cardiac impulse?

The heart is myogenic which means it generates its own electrical impulse - this originates from the sinoatrial node in the right atrium. 2. The impulse from the SA node passes through the right and left atr...
JM
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Describe briefly how you would show that manganese(II) ions catalyse the reaction between manganate(VII) ions and ethanedioate ions, in dilute sulphuric acid.

Mix the reagents and record the time taken for a specific observation, e.g. disappearance of colour which is characteristic for this chemical reaction. We repeat this step and add more manganese(II) ions; a ...
SS
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What is saltatory conduction?

Motor neurones have a myelin sheath made of Shwann cells. It's an electrical insulator meaning action potentials cannot pass through them. Along the axon there are gaps where there's no myelin sheath, called...
EB
Answered by Emily B. • Biology tutor
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Analyse pages 38-39 of Regeneration making connections between landscape and mindscape, and relate to page 184

In Regeneration, Pat Barker explores the horrific consequences of war upon the human psyche. This is primarily demonstrated in the character of Burns, a man unable even to eat due to his damaging experience ...
JO
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