OCR A-Level Physics 2018 UNOFFICIAL MARK SCHEME

Am editing with corrections - please make me aware of any mistakes or just say if you agree with some thanks!
MCQ:
C - only non SI base unit was the volt.
B
A
A
D - Moment was 40Nm
B
C
D
B
D
D
C
C
D
B - graph for GPE had the shape of a positive quadratic through the origin only in quadrant 1
Answers to maths:
28.2
40.5
3.00
T=2.75*10^4 s
M=6.44*10^23
Ratio of g’s: 9.88
3.75*10^4
33.9m (length of windmill arm)
100 windmills
Temp=8620K
Hits ground with 2.89ms^-1
Average force over given time to bring the object to rest after hitting ground=13.9N
42±3
1.57 ms^-1 velocity when normal contact force=0 at B.
3.67*10^-24
On 6 marker escape velocity=1328ms^-1
Lambda=293 nm
Lambda for diffraction grateing question=6.06*10^-7m

Other General Answers which weren’t show thats (if any other questions I have forgotten lmk)
Kinetic energy at max height was non zero as had a component of velocity in the horizontal.
A=white dwarf B=red giant
Not N3L pair as act on diff bodies and are of different types of force
Give one feature of a black hole: Infinitely dense/singularity
Kinetic energy=p²/2m

does anyone have a copy of the 2018 question papers?