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What is an example of a natural satellite?

The Moon
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Answered by Katie B. • Physics tutor
2780 Views

A cuboid has sides such that the longest side is two units more than the shortest side, and the middle length side is one unit longer than the shortest side. The total surface area of the cuboid is 52 units². Calculate the length of the shortest side.

The sides of the cuboid are as follows: x, x+1 and x+2. Total surface area of a cuboid is the area of each surface added together. Therefore 2x(x+2)+2x(x+1)+2(x+2)(x+1)= 52 units². 2x²+4x+2x²+2x+2x²+6x+4= 52...
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Answered by Sabina S. • Maths tutor
3710 Views

How can I get to grips with German word order?

Word order in German can seem daunting, as it often does not follow the same pattern as English. However, there are rules to help you, and the more you read and listen in German, the more you will have a nat...
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Answered by Sophie D. • German tutor
4466 Views

Integrate x^2e^x with respect to x between the limits of x=5 and x=0.

This question is to test integration by parts. First let u=x 2 and u'=2x as a result, and v'=e x and so v=e x too. Then use the by parts formula to express the integral as x 2 e x ​​​​​​​-2(integral of):(xe ...
AA
Answered by Alex A. • Maths tutor
6431 Views

Give the reagents required for the nitration of toluene (methylbenzene) to 2,4,6-trinitrotoluene and provide a mechanism.

The reagents needed are sulphuric acid and nitric acid. It may be useful to notice that nitric acid here acts as a stoichiometric reagent, in that it is used up in the reaction to nitrate the toluene, but su...
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Answered by Alex A. • Chemistry tutor
8784 Views