June 2011 G485-Fields, Particles and Frontiers of Physics Watch

Pheylan
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#221
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#221
(Original post by jam.wa)
Dream question:

'Fail to calculate this really difficult capacitor question'

I HATE capacitors more than anything.
:confused:

I'd like lots of marks on capacitors and nuclear/atomic stuff. Zero on health and electromagnetism would be :sogood:
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Oh my Ms. Coffey
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#222
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#222
(Original post by Pheylan)
:confused:

I'd like lots of marks on capacitors and nuclear/atomic stuff. Zero on health and electromagnetism would be :sogood:
There was copious amounts of nuclear/fusion last time and no EMI.
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jam.wa
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#223
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#223
(Original post by Pheylan)
:confused:

I'd like lots of marks on capacitors and nuclear/atomic stuff. Zero on health and electromagnetism would be :sogood:
And the universe can just f*** off?

"What is a comet?"

The only definition on the paper. And it's the only one you haven't remembered.
I don't like it when that happens
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jam.wa
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#224
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#224
I am very glad Physics is nearly over.
I've had some tricky times with you over the past two years.
Horrible evenings wasted by horrible questions from your horrible textbook.
That textbook... you look in the back to check your answers, start with 1a)i), and they've not bothered to put it in. All the other answers are there, but the one you weren't quite sure on, has vanished. What wasters.

While a third of our original class dropped Physics within the first month. I didn't think I was even going to make it past 'mean' drift velocity. But now I'm at the end, looking at the stars, trying to remember how they are formed and blahdeblahdeblah.

You've been mean to me Physics, so please give me a nice juicy exam on Tuesday.
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Roar.
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#225
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#225
(Original post by Oh my Ms. Coffey)
66 and 65 for an A.
Do you know what it is for a B or C?

I need a C in this unit to get into uni...

Cheers
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Oh my Ms. Coffey
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#226
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#226
(Original post by Roar.)
Do you know what it is for a B or C?

I need a C in this unit to get into uni...

Cheers
I thought B was around 58, you'd have to check the OCR website.
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ViralRiver
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#227
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#227
A star at a distance of 11 ly from the Earth provides us with a power per unit area of 1.7x10^-12 Wm^-2. Calculate the power output of the star.

I used the inverse square law to get the initial intensity (I = Io / r^2) and using 1 ly = 9.461 x 10^15m - but not sure if this is the way to go or where to go from there, help?
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Roar.
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#228
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#228
Are capacitors in this unit? Sorry for 20 questions
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FristyKino
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#229
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#229
(Original post by Roar.)
Are capacitors in this unit? Sorry for 20 questions
Yes time to open the textbook?
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FristyKino
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#230
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#230
(Original post by Oh my Ms. Coffey)
There was copious amounts of nuclear/fusion last time and no EMI.
Stop scaring me i hate EMI
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Rothers
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#231
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#231
What are people's favourite and worse topics?

My favourite is the Nuclear stuff (except that descriptive rubbish)

Worst - Probs medical physics
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Pheylan
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#232
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#232
(Original post by jam.wa)
And the universe can just f*** off?

"What is a comet?"

The only definition on the paper. And it's the only one you haven't remembered.
I don't like it when that happens
Didn't even know we have to know what comets are lol
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CoffeeStinks
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#233
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#233
(Original post by jam.wa)
I am very glad Physics is nearly over.
I've had some tricky times with you over the past two years.
Horrible evenings wasted by horrible questions from your horrible textbook.
That textbook... you look in the back to check your answers, start with 1a)i), and they've not bothered to put it in. All the other answers are there, but the one you weren't quite sure on, has vanished. What wasters.

While a third of our original class dropped Physics within the first month. I didn't think I was even going to make it past 'mean' drift velocity. But now I'm at the end, looking at the stars, trying to remember how they are formed and blahdeblahdeblah.

You've been mean to me Physics, so please give me a nice juicy exam on Tuesday.
Totally agree.
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jam.wa
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#234
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#234
(Original post by ViralRiver)
A star at a distance of 11 ly from the Earth provides us with a power per unit area of 1.7x10^-12 Wm^-2. Calculate the power output of the star.

I used the inverse square law to get the initial intensity (I = Io / r^2) and using 1 ly = 9.461 x 10^15m - but not sure if this is the way to go or where to go from there, help?
First of all, convert 11ly into metres:
~1.04 x 10^17 <--- This is r

Now work out surface area:
4(pi)r^2 ~ 1.36 x 10^35 m^2

Multiply this by intensity, m^2 cancel giving answer in Watts:
~2.31 x 10^23W

I do believe?
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jam.wa
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#235
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#235
(Original post by Pheylan)
Didn't even know we have to know what comets are lol
I just learn all the things in 'key definition' boxes, you probably don't, I haven't checked the spec.
Good to see a Curb fan by the way.
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Oh my Ms. Coffey
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#236
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#236
Urgh, doing these examination questions are not helping me at all some of them are stupid.
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jam.wa
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#237
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#237
(Original post by Oh my Ms. Coffey)
Urgh, doing these examination questions are not helping me at all some of them are stupid.
Example?
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Oh my Ms. Coffey
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#238
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#238
(Original post by jam.wa)
Example?
The electromagnetic ones just the way they word it and set out the questions are much harder and not like what we've had in the mocks.
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ChoYunEL
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#239
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#239
I think some people here are confusing this with OCR Physics B..
Comet? That doesn't come up surely...
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jam.wa
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#240
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#240
(Original post by Oh my Ms. Coffey)
The electromagnetic ones just the way they word it and set out the questions are much harder and not like what we've had in the mocks.
Oh, the ones in the book? I know. They're ridiculous. But look at the dates, they're so old. In class we had to do ones older than us.

You know the ones that are so old the photocopier prints them diagonally across the page somehow?

I find if I write down the questions and answers of the ones I get wrong and memorize them, it will help me with some of the weirdo questions they like to throw into our exam.
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