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OCR PHYSICS B G495~ 18th June 2015 AM ~ A2 Physics

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What did everyone write about Z?

I wrote the flux was the same, but the density was twice as great.
Original post by Minecraft27
What did everyone write about Z?

I wrote the flux was the same, but the density was twice as great.


I kind of wrote the same. Did they say that area halved? I must've missed it and just said that density increased.


Posted from TSR Mobile
Original post by Rhetorical Hips
I kind of wrote the same. Did they say that area halved? I must've missed it and just said that density increased.


Posted from TSR Mobile


The area of Z was half the width of the rest of the core.

I wrote that the density therefore doubled, and the flux stayed the same.
Original post by Minecraft27
The area of Z was half the width of the rest of the core.

I wrote that the density therefore doubled, and the flux stayed the same.


What did you say about the crack?


Posted from TSR Mobile
Original post by Minecraft27
It depends what number you started with. I started with the answer I got which was 5.5 or something like that.

My answer led me to 379. I'm sure they'll allow it.


ah ok that's good thank you :smile:
Original post by Rhetorical Hips
I kind of wrote the same. Did they say that area halved? I must've missed it and just said that density increased.


Posted from TSR Mobile


yeah flux was the same and flux density doubled :smile:
Original post by Rhetorical Hips
What did you say about the crack?


Posted from TSR Mobile


Flux goes down, flux density stays same.
Original post by Rhetorical Hips
What did you say about the crack?


Posted from TSR Mobile


it stopped the flow of flux in the core, so the flux decreased and due to air being a good insulator, the flux density unchanged :smile:
Is quark number the same as baryon number?
Reply 329
Original post by Minecraft27
Flux goes down, flux density stays same.

Thats impossible mate. By definition, flux density is flux/area. Unless the area halved due to the crack, the flux density would also fall.
Original post by HennersPD
it stopped the flow of flux in the core, so the flux decreased and due to air being a good insulator, the flux density unchanged :smile:


I wrote air has a lower permeability than iron. Think I'll still get the mark? I wrote the density was unchanged but flux went down.
Original post by Minecraft27
I wrote air has a lower permeability than iron. Think I'll still get the mark? I wrote the density was unchanged but flux went down.


yeah I'm sure! what'd you say for the equipotentials where the field at X was stronger than Y and then how did you draw the complete equipotential for X? I did a curve through the point X?! :/
Original post by STATER
Thats impossible mate. By definition, flux density is flux/area. Unless the area halved due to the crack, the flux density would also fall.


so the flux density would also decrease?
Reply 333
Original post by HennersPD
so the flux density would also decrease?


Yes
Original post by HennersPD
yeah I'm sure! what'd you say for the equipotentials where the field at X was stronger than Y and then how did you draw the complete equipotential for X? I did a curve through the point X?! :/


I did a ring around the centre going through point X.

I said it was 4 times stronger at X than at Y.
what did people get for the temperature T when 3N electrons are released? :smile:
Original post by HennersPD
what did people get for the temperature T when 3N electrons are released? :smile:


2312 kelvin. Don't know if that's right or not.
Reply 337
Original post by HennersPD
what did people get for the temperature T when 3N electrons are released? :smile:

2800 or something close to that
Edit: I don't remember well. Only that it was the same 1st SF
(edited 8 years ago)
Original post by Minecraft27
I did a ring around the centre going through point X.

I said it was 4 times stronger at X than at Y.


Phew! that's what I did too, thought it was wrong when i drew it because it looked quite strange haha! Ah ok me too :smile:
Original post by Minecraft27
2312 kelvin. Don't know if that's right or not.


I got something similar too :smile:

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