Here are some of the answers I got for some questions in P2 and P3, that I am pretty sure are correct:
P2: Conservation of momentum calcs - 5m/s
P2: Half life of the element was 12 years.
P2: Advantages of fusionable fuels: Don't produce radioactive waste that needs to be disposed off (something to that effect), and they produce more energy per Kg - some more could've been said probably - they're hydrogen isotopes, so are renewable and abundant.
P2: 51 coulombs for the charge question , and 612Joules for energy transferred
P2: Rocket velocity Q: The graph was B.
P2: rocket velocity increases ?? I mean bit of a vague question, but oh well. Difference between speed & velocity - velocity has a direction, speed does not.
P3: First Q, was 1.25
P3: Refractive index, first glass question was 1.5 something
P3: Second q: 26.18 degrees or 26.2
P3: hydraulics Q: 84000N
P3: bus won't topple as line of action is within the base, and doesn't produce a resulting moment
P3: eye: ciliary muscles & retina - also the critical angle one, the line went straight forward when i = critical angle
P3: 20,000hz for ultrasound, and wavelength = an atom, although i put electron, after I crossed out an atom lol - weird question.
P3: No of coils 18...
P3: Motor effect, and the arrow you had to draw was one going upward toward the top of the page.
P3: Centripetal force: D - could've said, mass of car, radius of circle it is travelling in, or distance from the centre, or speed. - also in this instance it is friction which causes it.
That's all I can remember atm, but all in all, a pretty good paper set by AQA for both P2 and P3. Hope you all did well guys.
P2: Plum pudding is positive
P3: Conditions was short sight - the 60 year olds had a focal length/power or whatever it was of 0.5 metres - you also had to estimate the diopters which was anywhere between 0.6-0.8 probably.
P2: The gravitational and kinetic energy was 3.6 J i think, or was that the braking distance Q idk