Top answers

How do I know when to use the subjunctive mood in Spanish?

The subjunctive is notoriously difficult to master but its use does tend to follow particular rules. At this level it is important to know and have a good understanding of the folloiwing conditions which req...
FC
Answered by Freddie C. • Spanish tutor
3280 Views

Explain why sodium is more reactive than Lithium? (4 marks)

Na has more electron shells/ energy levels than Li. This means that Na has a greater atomic radius than Li. Therefore, the outer shell electron in Na experiences a weaker nuclear attraction than in Li. Less ...
HM
Answered by Haider M. • Chemistry tutor
48742 Views

What can I do to impress Oxbridge interviewers and what are they looking for?

Oxbridge interviewers want to see how you think. One tip is to think out loud, explain your thought process- if you don't get the answer right, it might not matter. It's about how you got to it. They also wa...
EF
2335 Views

Describe how the rhythmicity of the heart is established and maintained with respect to the different stages in the cardiac cycle (6 marks)

The Sinoatrial Node (SAN) generates the wave of excitation/ Action potential (AP). The AP spreads across the atrial walls, stimulating the myocardial cells to contract This initiates the atrial systole. The ...
HM
Answered by Haider M. • Biology tutor
6826 Views

At x=3, is the polynomial y= (4/3)x^3 -6x^2 + 11 at a maxima or minima?

First, take the first differential: y' = 4x^2 -12x. At x=3 y'= 0 so therefore the function is at a point of inflection. Taking the second derivative: y'' = 8x -12. At x=3 y''= 12. As 12 is greater than 0, th...
JT
Answered by James T. • Maths tutor
4186 Views