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# Edexcel A2 Physics Unit 5 'Physics from Creation to Collapse' watch

1. (Original post by JayAyy)
I probably did, but at the moment I can't remember if I did or not.
Anyhow that would be an extra point, so it would not be a problem.
2. (Original post by JayAyy)
I got 1.11Hz
THANK GOD. I got so muddled up in that one, went back to it with ten minutes left at the end of the exam and had to work on another bit of paper as I'd used to the space :P

I got that in the end.

It just bothered me that the acceleration was g.

*prays we got it right*
3. (Original post by fredbraty)

Now lets all pray

LOW GRADE BOUNDARIEEEEEEEEEEEEEEEEEEEEEES! !!!!!!!!!!!!!!!!!!!!!!!!
You are late, I started praying yesterday itself.
4. did people get T^(-1) as one of the ansers to the multiple choice questions
5. This paper wasn't too bad for me, when I finished I actually had time at the end to go back and look, which never ******* happens in Physics papers!

Although the one about the mouse I really screwed up. I read questions too fast and didn't notice it said it was displaced vertically - if I had it would have been easy. Somehow I got some answer that was wrong, but maybe I'll get like 1 or 2 marks for the use of correct formulas even if it was completely wrong.

I was glad I had extra time too cause I noticed a few silly mistakes I made in the multiple choice, like noticing it said root mean square speed instead of mean square speed and noticing it said which of these statements is NOT true instead of true <_<; And lastly noticing it saying frequency instead of wavelength on that one about temperatures of black body radiators, so I put T, not T^-1
6. (Original post by nnamdi)
I jus wana say thank you to you guys..without u guys not sure i might hv done well..most especially oliver!!..tnx guys
In would like to thank Oliver as well. I was only able to attend one of the revision sessions, but it was very refreshing to be able to revise in that way.

I almost wish I had discovered the Student Room much earlier in my studies :P

I hope at University to be able to work in such a way (as in video/microphone conferences where everyone gathers together to question and answer).

Even if I don't get my desired results, it has been fun working with you guys!
7. (Original post by Zak979)
did people get T^(-1) as one of the ansers to the multiple choice questions
I did, that was a tricky one, but we are correct.(hope so)
8. (Original post by Zak979)
did people get T^(-1) as one of the ansers to the multiple choice questions

People,what did you write in the "Why the age of the universe is not known accurately" question?

Also,at the damping one they asked to mark points where acceleration was maximum and speed zero,right?
9. (Original post by Sasukekun)
This paper wasn't too bad for me, when I finished I actually had time at the end to go back and look, which never ******* happens in Physics papers!

Although the one about the mouse I really screwed up. I read questions too fast and didn't notice it said it was displaced vertically - if I had it would have been easy. Somehow I got some answer that was wrong, but maybe I'll get like 1 or 2 marks for the use of correct formulas even if it was completely wrong.

I was glad I had extra time too cause I noticed a few silly mistakes I made in the multiple choice, like noticing it said root mean square speed instead of mean square speed and noticing it said which of these statements is NOT true instead of true <_<; And lastly noticing it saying frequency instead of wavelength on that one about temperatures of black body radiators, so I put T, not T^-1
f=1/t so T^-1 is correct
10. (Original post by havinghoops)
In would like to thank Oliver as well. I was only able to attend one of the revision sessions, but it was very refreshing to be able to revise in that way.

I almost wish I had discovered the Student Room much earlier in my studies :P

I hope at University to be able to work in such a way (as in video/microphone conferences where everyone gathers together to question and answer).

Even if I don't get my desired results, it has been fun working with you guys!
I agree!
Where are you going for university havinghoops?
11. (Original post by Zak979)
did people get T^(-1) as one of the ansers to the multiple choice questions
I put that at first but it I believe it said what is frequency proportional to, not wavelength.

Wavelength x Temp = Constant

Wavelength = Constant/T

Velocity = Wavelength x Frequency

Wavelength = Velocity/Frequency

Velocity/Frequency = Constant/T

Frequency/Velocity = Constant x T

Frequency is proportional to T.
12. (Original post by havinghoops)
In would like to thank Oliver as well. I was only able to attend one of the revision sessions, but it was very refreshing to be able to revise in that way.

I almost wish I had discovered the Student Room much earlier in my studies :P

I hope at University to be able to work in such a way (as in video/microphone conferences where everyone gathers together to question and answer).

Even if I don't get my desired results, it has been fun working with you guys!
but anyhow I have one more year of A Levels.
13. (Original post by Zak979)
did people get T^(-1) as one of the ansers to the multiple choice questions
I think I got T^1.

Proof:

λT = constant

T = constant/λ

Because λ = v/f

T = constant x f / v

Therefore, T is directly proportional to frequency.
14. (Original post by Pegasus92)
f=1/t so T^-1 is correct
T was the temperature wasn't it??
15. (Original post by Sasukekun)
I put that at first but it I believe it said what is frequency proportional to, not wavelength.

Wavelength x Temp = Constant

Wavelength = Constant/T

Velocity = Wavelength x Frequency

Wavelength = Velocity/Frequency

Velocity/Frequency = Constant/T

Frequency/Velocity = Constant x T

Frequency is proportional to T.
Was T temperature or period?
16. Can't actually remember anymore, I assumed it was temperature (I think it mentioned temperature) Someone will confirm
17. (Original post by Pegasus92)
f=1/t so T^-1 is correct
T was temperature, not time period.
18. (Original post by Pegasus92)
Was T temperature or period?
No,no people!!!!!!!!

It was temperature!

See there were some tricky ones!

The asnwer is T^-1 since it asked the relationship between maximum wavelength and T.
19. I need to see the paper, this is so confusing!!!
20. (Original post by JayAyy)
T was temperature, not time period.
**** are sure?
How did I miss it?
(funny how life is)

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