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A Level

'The Great Depression caused the fall of the Weimar Republic'. Assess the validity of this view.

The collapse of the Weimar Republic has been an area of contentious debate for historians seeking to explain the emergence of the Nazi phenomenon. The political and socio-economic climate of 1930s’ German...

NG
Answered by Neha G. History tutor
7800 Views

Differentiate the function; f(x)=1/((5-2x^3)^2)

We know from the properties of basic indices that a-x=1/ax, so 1/((5-2x3)2=(5-2x3)-2 where in this case, a=5-2x3and x=2. Then t...

BK
Answered by Benjamin K. Maths tutor
5791 Views

Describe methods of solute transport across a cell membrane.

For non-polar small molecules simple diffusion down a concentration gradient through the phospholipid bilayer is possible as it is soluble in the hydrophobic fatty acid tails of the membrane. An example o...

AF
Answered by Ayano F. Biology tutor
3609 Views

Differentiate (2^x)(5x^2+5x)^2.

This is a relatively difficult equation to differentiate as there are various parts to consider.Firstly, we will let u=2^x and v=(5x^2+5x)^2 in the product rule. Then the differential of u is (2^x)ln(2). ...

GH
Answered by George H. Maths tutor
3780 Views

Explain why benzene requires use of a halogen carrier catalyst to react with bromine while phenol does not.

The oxygen atom in the phenol molecule has a lone pair of electrons. These electrons become delocalised into the aromatic ring, increasing its electron density. This activates the ring. This causes Br

AM
Answered by Aidan M. Chemistry tutor
15026 Views

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