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A fluorescent light uses a lining to emit visible light, explain why this is necessary and how it works.

The vapour inside a fluorescent tube is excited and ionised by the electrode either end of the tubes. The excited electrons inside of the vapour are unstable and so decay into lower energy states. The differ...
MC
Answered by Monty C. • Physics tutor
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Solve 7x – 9 = 3x + 2

aim is to move all numbers to one side and all the x to one side. whatever you do to one side, you must do to the other side. For example I want to remove -9 on the left by adding +9 to left side but I need ...
SZ
Answered by Shahswar Z. • Maths tutor
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Express (9x^2 + 43x + 8)/(3+x)(1-x)(2x+1) in partial fractions.

A/(3+x) + B/(1-x) + C/(2x+1) = (9x^2 + 43x + 8)/(3+x)(1-x)(2x+1)So... A(1-x)(2x+1) + B(3+x)(2x+1) + C(3+x)(1-x) = (9x^2 + 43x + 8)Insert x=1Equation becomes 12B = 60 so B = 5.Then insert x=-3Equation becomes...
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Answered by Abhik V. • Maths tutor
7024 Views

How should I structure my points in my essay?

Its important when writing an essay to always make sure your points are fully explained and evidenced. The best way to remember to do this is to use the PEEL system. PEEL stands for Point, Evidence, Explanat...
ES
Answered by Eleanor S. • English tutor
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What is the difference between the meanings of the perfect and imperfect tenses?

The perfect and imperfect tenses in latin are both used to describe actions which take place in the past, but they are used to describe slightly different types of actions. The perfect is used to describe ac...
ES
Answered by Eleanor S. • Latin tutor
2746 Views