You are Here: Home >< Physics

# AQA Physics Unit 1 PHYA1 20th May 2013 Watch

1. I hated that last question. And threshold frequency part from that a good exam
2. What happens when intensity's constant and frequency decreases? I put rate of emission decreases until fmin.

Posted from TSR Mobile
3. How many similarities between hadrons and leptons were we supposed to come up with?

Posted from TSR Mobile
4. (Original post by jazzynutter)
How many similarities between hadrons and leptons were we supposed to come up with?

Posted from TSR Mobile
They meant between baryons and mesons I think :P
5. I reckon I may have finally broken 3 marks on the 6 marker, made a stupid mistake on the first question calculating specific charge. I think grade boundaries will be high
6. Did anyone get 30000 ohms for the last question?
7. (Original post by Ephixa)
They meant between baryons and mesons I think :P
Nah mate, they meant between Leptons and Hadrons, as far as I could tell. I wrote the differences between both of them anyway. But I think they meant leptons and hadrons.
8. (Original post by 123456789012)
Did anyone get 30000 ohms for the last question?
yes I did! Thought this paper was quite nice, but anticipating grade boundaries to be really high I wanted a 6 marker on an experiment! But oh well, at least its done now!
9. What did everyone do for the specific charge on the first question? and what did everyone get for the very last? I got 30000ohms
10. Last question

V (output) = (R1/ R1+R2+R3) X V(source)

0.75 = (5/ 5+R2+5) X 6

Rearrange R2=30kohms

R2--> variable resistor resistance

so happy

This was posted from The Student Room's iPhone/iPad App
11. (Original post by 123456789012)
Did anyone get 30000 ohms for the last question?
Yessssss

Posted from TSR Mobile
12. (Original post by Son234)
Last question

V (output) = (R1/ R1+R2+R3) X V(source)

0.75 = (5/ 5+R2+5) X 6

Rearrange R2=30kohms

R2--> variable resistor resistance

so happy

This was posted from The Student Room's iPhone/iPad App
Would I get 2 marks for getting 30ohms as i didnt do 10^3

Posted from TSR Mobile
13. (Original post by Maloneyyy)
What did everyone do for the specific charge on the first question? and what did everyone get for the very last? I got 30000ohms
I did the specific charge of the entire ion, thus including the mass of the electrons, and I also got 30k ohms!
14. Does anyone usually put an unofficial mark scheme up for physics?

Posted from TSR Mobile
15. The similarity they wanted for leptons and HADRONS

Is that leptons and HADRONS can interact together by the WEAK interaction

Eg proton+electron capture

That was the similarity

This was posted from The Student Room's iPhone/iPad App
16. (Original post by TheBeesKnees)
I did the specific charge of the entire ion, thus including the mass of the electrons, and I also got 30k ohms!
So you did 18 electrons and 20 protons x the charge of the electron? nice!
17. OMG I loved that 6 marker! Overall I found the paper nice whilst others found it fairly hard. Not sure what the boundaries are gonna be, but I'm hoping its low to boost my UMS up
18. (Original post by Jimmy20002012)
Would I get 2 marks for getting 30ohms as i didnt do 10^3

Posted from TSR Mobile
You would definitely get one I'm not entirely sure about 2 but depend on the examiner

This was posted from The Student Room's iPhone/iPad App
19. What did you get for the specific charge? I got 4.0x10^7 Ckg^-1.
20. 4.0x10^6

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: May 14, 2014
Today on TSR

### Anxious about my Oxford offer

What should I do?

### Am I doomed because I messed up my mocks?

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

Can you help? Study help unanswered threadsStudy Help rules and posting guidelinesLaTex guide for writing equations on TSR

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE