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Explain why a firm in Perfect Competition earns supernormal profits in the short-run

A perfectly competitive market is a market where a large number of firms produce identical products (perfect substitutes). The characteristics that define perfect competition are the following: - no barri...

Answered by Nora V. • Economics tutor

19690 Views

How can geographers help to tackle climate change?

Geographers bring a range of perspectives and analytical lenses to the table when it comes to climate change; perhaps the grandest problem facing the world today. As the discipline of geography is broadly...

Answered by Jonathon T. • Geography tutor

3625 Views

Explain how fiscal stimulus might be used to bring about supply-side improvements in the UK economy.

Begin by defining fiscal policy and a supply-side improvement (the latter should be supplemented with a diagram). Following the definition of a supply-side policy, we might begin with examples of fiscal p...

Answered by James S. • Economics tutor

2376 Views

How can you express the complex number z = 2 + 3i in the form z = r(cos x + i sinx)

First you want to draw the complez number on to an argand diagram, using which you will find the modulus and argument. This is how to do so: The modulus is to be obtained using pythagoras (which will be e...

Answered by Meghali B. • Maths tutor

8893 Views

Molecules of hydrogen chloride, HCl, and molecules of fluorine, F2, contain the same number of electrons. Hydrogen chloride boils at –85 °C and fluorine boils at –188 °C.Explain why there is a difference in the boiling points of HCl and F2.

F2 has van der Waals’ forces, whilst HCl has permanent dipole–dipole attractions. Permanent dipole–dipole attractions are much stronger than induced dipoles. More enegery is required to break the stronger...

Answered by Ellis A. • Chemistry tutor

27712 Views