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AQA Physics unit 2

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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!
(edited 7 years ago)
Reply 121
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etata
7
Original post by surina16
Anyone else get 1600m/s for the ultrasound one?


I did!!
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?
Did anyone tick 'gamma' as the least ionising or 'beta'?
Original post by Isabelle.Kay21
Did anyone tick 'gamma' as the least ionising or 'beta'?


It was gamma
Original post by SmithAmelia
It was the earth wire


No it wasn't, it is live wire, look it up
I actually really liked the 6 marker, mainly because I thoroughly studied it last night
Original post by Isabelle.Kay21
Did anyone tick 'gamma' as the least ionising or 'beta'?


Gamma is the least ionising
Original post by Isabelle.Kay21
Did anyone tick 'gamma' as the least ionising or 'beta'?


I ticked gamma🌌🌌
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:smile:
Original post by Anygy
I thought the earth wire connected to the fuse, which I what the question asked, unless I spaced out? :s-smilie:


I put earth wire as it works in conjunction with the fuse
Original post by Ayesha_Narod
Yeah, you had to use POTS (position, orientation, type and size), don't stress:smile:


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! :smile:
Original post by Ayesha_Narod
It was gamma


Alpha radiation was least ionising.
Reply 133
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Risk08
9
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
Reply 134
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Monsor
2
Original post by B1L4L10
Alpha radiation was least ionising.


Gamma is least ionising

Posted from TSR Mobile
Reply 135
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Risk08
9
Original post by B1L4L10
Alpha radiation was least ionising.


That is a joke? It is the most ionising if you actually think this.
Original post by B1L4L10
Alpha radiation was least ionising.


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/gcsebitesize/science/add_edexcel/fission_fusion/fissionfusionrev2.shtml
If I put units but no actual answer will i get a mark? :biggrin:
Reply 138
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Dana22
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
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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