that's irritating, i had time to work it out but i panicked at the end in froze up, so i guessed the 0.7. kind of rubs it in that i can work that out that easily after the event . but hey
For the set 2 specimen papers, my teacher said combining the 2 set 2 papers an A was around 60%. Hopefully the grade boundaries will be similar for this???
This is definitely wrong, because the distance wasn't 12 cm it was 14.5, you had to take the distance from the centre of the sphere to the pivot point.