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Compare the advantages and disadvantages of using bioethanol over fossil fuels.

Bioethanol is a renewable fuel produced from plants, which photosynthesise to grow, taking in carbon dioxide and producing oxygen. This means there is no net increase in carbon dioxide, which is a greenhouse...
MI
Answered by Michael I. • Chemistry tutor
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Write (3 + 2√5)/(7 + 3√5) in the form a + b√5

First multiply top and bottom by conjugate of denominator, (7-3√5), and expand(3 + 2√5)(7 - 3√5)/(7 + 3√5)(7 - 3√5)(21 + 14√5 - 9√5 - 30)/(49 + 3√5 - 3√5 - 45)Simplify top and botton(-9 + 5√5)/4Write in requ...
BA
Answered by Beth A. • Maths tutor
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In the Photoelectric Effect, what is mean by 'threshold frequency' and how does the magnitude a photons frequency effect the electron it is absorbed by?

The threshold frequency is the minimum frequency a photon can be and still just overcome the work function (Φ) of a particular material. The threshold frequency is directly proportional to the work function ...
JH
Answered by Josh H. • Physics tutor
15818 Views

How does one go about a product analysis?

A product analysis takes into account who the product is for, both client and user if separate, and who is designing and making the product.It also takes into account;ShapeFormColour & TextureDecorationI...
BB
2672 Views

Can you aid me in my D&T A-Level Coursework?

Of course, allow me to read through it or walk me through it and I will aid you in it and advise on appropriate methods where possible
BB
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