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Why is Copper used in cooking equipment and wiring?

Copper is a metal, it therefore has delocalised electrons, i.e. e- which have come away from the atom, which can move through the solid metal allowing it to conduct heat and electricity. Other properties of ...
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Answered by Oliver G. • Chemistry tutor
11273 Views

How do you begin to analyse a play?

When analysing a play, you will need to think slightly differently to when you analyse a poem or piece of prose text. Though the textual analysis remains important, there are additional characteristics to co...
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Answered by Anna T. • English tutor
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How do the structure of phospholipids contribute to their positioning in the cell plasma membrane?

The plasma membrane is organised into what is referred to as a lipid bilayer, consisting primarily of phospholipids and proteins. Phospholipids contain a hydrophobic (water hating) fatty acid 'tail' and a hy...
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Answered by Oluwatobi O. • Biology tutor
5552 Views

Sketch the curve y=4-(x+3)^2, showing the points where the curve crosses the x-axis and any minimum or maximum points.

This equation rearranges to give -y=(x+3)^2-4, which is very similar to our curve y=(x+3)^2-4 from before. In fact, replacing y with -y in an equation is equivalent to reflecting the curve through the x-axis...
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Answered by Jonny I. • Maths tutor
4355 Views

Find the coordinates of the minimum point of the curve y=x^2+6x+5.

To answer this question is equivalent to minimising y=(x+3)^2-4. We have that all square numbers are greater than or equal to 0 so to minimise this equation, we require that (x+3)^2=0. This is satisfied only...
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Answered by Jonny I. • Maths tutor
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