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How does mark-recapture work?

Mark-recapture is a method of estimating a population size. A sample from the population is captured using an appropriate method, marked, and released. A second sample is then captured after an interval and ...
CS
Answered by Ciaran S. • Biology tutor
25573 Views

Given z=cosx+isinx, show cosx=1/2(z+1/z)

We first consider 1/z=(cosx+isinx)^(-1). Application of De Moivre's theorem for integer n: (cosx+isinx)^(n)=cosnx+isinnx yields the result 1/z=cosx-isinx. Addition of the two forms z and z^(-1) steers us to ...
CS
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Given the Earth orbits the Sun at a distance of 1.49*10^11m with Me = 5.97*10^24kg and Msolar = 1.99*10^30, what is the gravitational force between the Earth and Sun?

Using F = Gm 1 m 2 /r^2 and substituting in the values, we get F = 3.57*10^22N.
AS
Answered by Aaron S. • Physics tutor
3314 Views

What are "actus reus" and "mens rea"

Most criminal offences can be broken up into two parts that need to be satisfied in order for somebody to be convicted of the offence. These are the Actus Reus and Mens Rea. The Actus Reus can be thought of ...
RR
Answered by Robbie R. • Law tutor
7841 Views

how would I structure a 16 mark question?

if the essay has no stem to it I.e refers to a person in the question -then there is 6 marks for A01 which is primarily description of a theory or an experiment e.g what procedure was used, how many and what...
CC
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