AQA Physics Unit 4 Thread - JAN 28th 2010 (Post Exam)

Scroll to see replies

Reply 60

AlexSC

futuredoc77

am i the only idiot that does not feel ready at all?

i don't think so..

i get the majority of it, but the multiple choice just seems to be about manipulating equations.

Reply 61

furry747

futuredoc77

am i the only idiot that does not feel ready at all?

Haha! No! I feel so unprepared... :frown:

I've got equations running around my head everywhere. :woo:

Reply 62

futuredoc77

http://store.aqa.org.uk/qual/gceasa/qp-ms/AQA-PA04-W-QP-JUN08.PDF

question 1a Section B

where do i find the Amplitude from? the ms says its 90, i can't see it though
help please

[EDIT] its in the question, sorry i hadn't read it properly... anxiety.

how about 1 d ii then?

God i'm screwed :frown:

Reply 63

EasyTiger

This is going to be an epic fail!

Reply 64

futuredoc77

about an hour left... I'm givin up revisin' we'll see what happens..

Reply 65

Ram92

Aaggghhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

:smile:

Reply 66

furry747

Well, it was bad, but not as bad as it could have been.
I liked parts of the SHM and gravitational. The last bit on transformers was a little...hmm. 6 marks for the energy loss was a bit :s
I wrote about laminated core and circular design of the transformer to induce as much as possible.

How did everyone else find it?

Reply 67

2710

It was quite a hard paper imo 0_0. Some of it were horrible like the Transformers question, I only filled up like 1/3 lines! >__>

I couldn't do the kWH 20p question. I just couldn't do it!!

I found the multiple choice ok, I had an educated guess for two of them.

And, meh, I lost a few marks here and there. So what is it to get an A? 80 overall? I think I can make it >__>

D or E lol :frown:

2710

I think you may be me...

What did everyone get for the very first quesiton about the length of the swing?
I got 1.95m (3 sf) - and im praying that's right... :confused:

Reply 70

Eyesickle

furry747

I think you may be me...

What did everyone get for the very first quesiton about the length of the swing?
I got 1.95m (3 sf) - and im praying that's right... :confused:

I got 1.95 :biggrin:

took me forever, i kept dividing by g instead of multiplying!!! :biggrin:

Reply 71

EasyTiger

My prediction of epic fail materialised!

I thought it was hard...

Couldn't show the change in potential was 8GJ, dont think I did the centripetal acceleration right, missed out 2 parts on the last page due to running out of time

Reply 72

EasyTiger

Eyesickle

I got 1.95 :biggrin:

took me forever, i kept dividing by g instead of multiplying!!! :biggrin:

I got this

Reply 73

furry747

Eyesickle

I got 1.95 :biggrin:

took me forever, i kept dividing by g instead of multiplying!!! :biggrin:

OMG THANK GOD! :biggrin:

Slightly happier now!!!

And to the person above, I couldn't show it was 8Gj. I couldn't do centripetal acceleration too - what value of v did they want us to use? They didn't give anything!

Reply 74

Eyesickle

ahhh i found the transformers question annoying!!! and the 20kwh annoying. did literally all the rest to a reasonable amount. should be at least a C, possible more if grade boundaries get lowered :smile:

Reply 75

furry747

I'm hoping for a C too really. I'm on a B and that would be great, but, I don't think so somehow...

Reply 76

EasyTiger

I found this really hard, im dreading 11th march now.

Reply 77

2710

Yeh I got 1.95 too, but initally I had 190m. After about 5 mins, i looked back and saw 190m, and thought, wow thats a huge swing! lol

I really dont understand what kWH is. It wasted so much of my time, and I still didnt get it. WHY cant it be just 20p per how much ******* kW of energy you use? Like 20p for every 20W u use would be so much easier. They have to use kWH with just confuses me >__>

And the centripetal acceleration. I didnt get it in the exam, but I understand now.

a = g= GM / r^2

Oh and I got the 8GJ thing

U just use the potential energy formula and the distance changed