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Explain two features of the UK's constiution

A constitution establishes power and functioning of the government, how this should be carried out and the rights of those being governed. One feature of the UK constitution is that it is uncodified. This me...
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Answered by Isobel M. • Politics tutor
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How does the photoelectric effect (gold leaf experiment) demonstrate the particle nature of light?

A certain amount of energy is required to eject an electron from a metal surface. The gold leaf experiment shows that only light above a certain threshold frequency is able to eject electrons. If the frequen...
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Answered by Molly C. • Physics tutor
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The formation of ammonia is an equilibrium reaction; N2(g) + 3 H2(g) <--> 2 NH3(g) the enthalpy of this reaction is negative. What can be done to increase the yield of products?

Using le Chatelier's principle that when a change occurs in a system at equilibrium the system will counteract the change to establish a new equilibrium we can answer this question. If the pressure is increa...
TD
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a)Work out the total surface area of this cuboid (3cm x 4cm x 2cm). b) The cuboid has density 7g/cm^3, what is the mass of the cuboid?

a) The surface area of a 3 dimensional shape is the sum total of the area of each side of the shape. This cuboid is 3x4x2, and so it has 2 sides with area 3x4 = 12, 2 sides with area 4x2 = 8, and 2 sides wit...
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Answered by Luke J. • Maths tutor
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Factorise fully the following expression: 2a^(2)b + 6ab^(2)

Factorise fully the following expression: 2a 2 b + 6ab 2 First, find the common terms by treating, 2a 2 b and 6ab 2 as separate objects. We see common terms of... 2, a, and b We notice that 2ab a = 2a 2 b an...
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Answered by Michael W. • Maths tutor
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