Top answers

Why might a perfectly competitive firm make abnormal profit in the short run but only normal profit in the long run?

In the short run there is a lack of firms in the industry as it is still new and firms have little incentive to enter it yet. This low supply of firms in the market means the market ruling price will be grea...
RB
Answered by Reubin B. • Economics tutor
27857 Views

What's the difference between meiosis and mitosis?

They are both cell divisions but there are major differences betwenn them. First of all, meiosis only happens in sex cells (egg cells in women and sperm cells in men) and is a reduction diviosion, i.e. the a...
MT
Answered by Magdalena T. • Biology tutor
4832 Views

If i'm planning an essay for a question on regeneration in a specific area, how would I organise my paragraphs?

This is a case study focused question, you therefore need to include specific factual infomation about that case within every paragraph.Generally for long answered questions, you can divide your paragaphs in...
NC
Answered by Natalie C. • Geography tutor
6754 Views

There are 7 white socks and 4 black socks in a drawer. Two socks are taken out at random without replacement. Work out the probability that the two socks are the same colour

The probability of pulling out two socks of the same colour is n/m*(n-1)/(m-1) where n is the initial number of that type of sock and m is the total number of socks in the drawer. The reason that we take 1 a...
JB
Answered by James B. • Maths tutor
13458 Views

What causes isostatic rebound?

Isostatic rebound is the uplift and readjustment of the land after a glaciation. During the last glacial maximum, and other ice ages, the weight of the ice sheets pressed down on the land, causing it to sink...
MH
Answered by Martha H. • Geography tutor
17184 Views