Model answers:
Vernier measurement: 6.9 mm (100% this)
What's area needed on Mars for power: Mars doesn't have sun. So answer was snickers (trick question I know)
Question 9 page 18: this was just ridiculously easy, you crossed the question out.
How many components can you add? 69
Kaon doesn't have quarks, clearly.
Moments: again very nice question: ans was sq of 4761
For what shows being annihalited you had to tick yourself (again a very nice question)
What happens Uncertainty in young modulus:
Well cause this was 4 marks you had to be very precise:- so the answer was, nothing. You had to leave it blank ( trick question again, if you write any answer uncertainty increase)
This paper was overall very easy and I think for an A it will be 69. Gg