Top answers

Describe the differences and similarities between osmosis and diffusion (4 marks)

Similarities:neither require energyboth move particles from a high concentration to a low concentration area differences:Osmosis requires a partially permeable memberonly water moves by osmosis but liquids a...
BW
Answered by Brian W. • Biology tutor
3471 Views

Differentiate y=x^2+4x+12

y=x^2+4x+12dy/dx=2x+4
RH
Answered by Robert H. • Maths tutor
3509 Views

Calculate (7-i*sqrt(6))*(13+i*sqrt(6))

We expand the parentheses to get to the equation: 7 13-13 i sqrt(6)+7 i sqrt(6)-i i sqrt(36) which after some further calculations equals to: 91-6 i sqrt(6)+sqrt(36) [We got +sqrt of 36 because i i*=sqrt(-1)...
Answered by • Maths tutor
3355 Views

Why is the derivative of ln(x) equal to 1/x.

This fact can be deduced several ways, and I would encourage tutees to find other methods, (such as using implicit differentiation, or the chain rule.) However one of the simplest explanations is given below...
CV
Answered by Christopher V. • Maths tutor
11797 Views

With the help of a diagram, explain why a trade-off between price stability and low unemployment might occur. (9 marks)

The objective of price stability is to maintain a sustainable level of inflation, with the target being 2% for the UK government. A low level of unemployment can be defined as a low number of economic agents...
Answered by • Economics tutor
11966 Views