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# AQA Physics unit 2 Watch

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1. (Original post by surina16)
Anyone else get 1600m/s for the ultrasound one?
I did! Also, as that was in P3, can I ask whether the lens question was asking you to describe how the image changed as the object got closer to the lens or as it got further away? I can't remember and it is freaking me out!
2. (Original post by surina16)
Anyone else get 1600m/s for the ultrasound one?
I did!!
3. (Original post by Brewah)
That exam was hard!

I think I messed up all the calculations.

Did anyone remember getting these?

600 Ohms for resistance
0.015 Amps
400 Joules
100 Newtons
84 Kg
22 m/s^2
For the last question I got 0.1m/s2did anyone else?
4. Did anyone tick 'gamma' as the least ionising or 'beta'?
5. (Original post by Isabelle.Kay21)
Did anyone tick 'gamma' as the least ionising or 'beta'?
It was gamma
6. I actually really liked the 6 marker, mainly because I thoroughly studied it last night
7. (Original post by SmithAmelia)
It was the earth wire
No it wasn't, it is live wire, look it up
8. (Original post by Isabelle.Kay21)
Did anyone tick 'gamma' as the least ionising or 'beta'?
Gamma is the least ionising
9. (Original post by Isabelle.Kay21)
Did anyone tick 'gamma' as the least ionising or 'beta'?
I ticked gamma🌌🌌
10. (Original post by Bulbasaur10)
I did! Also, as that was in P3, can I ask whether the lens question was asking you to describe how the image changed as the object got closer to the lens or as it got further away? I can't remember and it is freaking me out!
Yeah, you had to use POTS (position, orientation, type and size), don't stress
11. (Original post by Anygy)
I thought the earth wire connected to the fuse, which I what the question asked, unless I spaced out?
I put earth wire as it works in conjunction with the fuse
12. (Original post by Ayesha_Narod)
Yeah, you had to use POTS (position, orientation, type and size), don't stress
I did that but i just found out I described it as if the object moved towards the lens and not away like the question said. I am so annoyed at myself......... It's almost the holidays though!
13. (Original post by Ayesha_Narod)
It was gamma
14. Does anyone know the answer to the one about suggesting what the disc theory meant about other stars or something like that? I had no idea
15. (Original post by B1L4L10)
Gamma is least ionising

Posted from TSR Mobile
16. (Original post by B1L4L10)
That is a joke? It is the most ionising if you actually think this.
17. (Original post by B1L4L10)
Ionisation ability
Ionising radiation is radiation that has enough energy to cause other atoms to lose electrons and form ions. The different forms of radiation have different levels of ionisation abilities:
Alpha particles – very ionising
Beta particles – moderately ionising
Gamma rays – weakly ionising

^This is from BBC Bitesize:
http://www.bbc.co.uk/schools/gcsebit...sionrev2.shtml
18. If I put units but no actual answer will i get a mark?
19. (Original post by Frankie___)
Did anyone else get these answers for the calculations.
200 ohms for the resistance
8.7A
84kg
22.0
I also got 120,000 for one of the questions
I got 200 and the 120,000 aswell, i think
20. For that spring one it was 300 N because you had to times it by three to get the three springs

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