Search our library of A Level questions

Top answers

All subjects

A Level

Is the demand for food likely to be Price elastic or Inelastic?

Definition: Price elasticity of Demand (PED) measures the responsiveness of Quantity Demanded to a change in the good's price.Food is considered a basic necessity, we cannot live without it and therefore ...

Answered by Frazer H. • Economics tutor

23740 Views

Explain fiscal policy and how it can be used

Fiscal policy is the use of governmental spending and taxation to influence aggregate demand (AD= C + I + G +(X-M)) in an economy. It can be used to boost economic growth, control inflation and stabilise ...

Answered by Annabel S. • Economics tutor

2099 Views

Give the general solution of the second order ODE dy2/d2x - 4dy/dx + 3 = 0

Solving the ansatz equation x^2 - 4x + 3 = gives 2 equal roots where x = 3 and x = 1The general solution therefore is y = Ae^3x + Be^x where A and B are arbitrary constants

Answered by Martha N. • Further Mathematics tutor

2733 Views

The binding of one molecule of oxygen to haemoglobin makes it easier for a second oxygen molecule to bind, explain why.

The binding of the first oxygen changes the tertiary structure of the haemoglobin. This uncovers the second binding site, allowing the second oxygen to bind.

Answered by Abbie T. • Biology tutor

12636 Views