Edexcel IAL Unit 6 Physics ~ 14th May 2015

yo! Radioactivity highly unlikely to come up since it was in jan 2015.... I have a weird feeling its gonna be some capacitor or momentum or spring stuff, Most likely capacitors because there was nothing on it in Jan 2015

Reply 2

OP

Original post by Lallana 11

yo! Radioactivity highly unlikely to come up since it was in jan 2015.... I have a weird feeling its gonna be some capacitor or momentum or spring stuff, Most likely capacitors because there was nothing on it in Jan 2015

It's probably gonna be momentum, that **** hasn't showed up in quite a while.

Reply 3

GUYS HELPPPPP! for Ln graphs how do we know what values to place on x and y axis???

Reply 4

thymolphthalein

4

Original post by Sal296

GUYS HELPPPPP! for Ln graphs how do we know what values to place on x and y axis???

The dependent variable usually goes on the y axis and the independent variable on the x-axis. For example in an experiment where you increase/decrease power to change light intensity, power is the independent variable and light intensity is dependent as it changes when we increase/decrease power.

If they say 'draw a graph of lnA against lnB, A is on the y-axis and B is on the x-axis.

Reply 5

Original post by thymolphthalein

The dependent variable usually goes on the y axis and the independent variable on the x-axis. For example in an experiment where you increase/decrease power to change light intensity, power is the independent variable and light intensity is dependent as it changes when we increase/decrease power.

If they say 'draw a graph of lnA against lnB, A is on the y-axis and B is on the x-axis.

THANKYOU, writing in the exam in 2 hours so nervous.

Reply 6

thymolphthalein

4

Original post by Sal296

THANKYOU, writing in the exam in 2 hours so nervous.

Me too, don't get nervous! We obviously have to try our best on this paper as well, but Unit 4 and 5 account for a much greater percentage of the grade and you can still revise for them. Just try to remain calm when you're doing the paper. :h:

As long as you know how to do uncertainties, remember general precautions, and know how to read and plot graphs, you will do fine. The experiment planning related question is a bit of a wild card though, because it could be anything.

Reply 7

Original post by thymolphthalein

Me too, don't get nervous! We obviously have to try our best on this paper as well, but Unit 4 and 5 account for a much greater percentage of the grade and you can still revise for them. Just try to remain calm when you're doing the paper. :h:

As long as you know how to do uncertainties, remember general precautions, and know how to read and plot graphs, you will do fine. The experiment planning related question is a bit of a wild card though, because it could be anything.

That's true well its kind of Unit 3 and unit 6 at the same time, Hopefully we can pull this off. Goodluck to you too, will be looking forward to discussing it with you. TC!

Reply 8

Good luck to everyone :smile:

inshallah we can walk out happy

Reply 9

OP

So how was it? I think it was great. :biggrin:

Reply 10

thymolphthalein

4

Easy enough. I accidentally scaled the graph wrong and had to do it again and lost a fair bit of time though and couldn't check properly. :frown:

But I think I did okay. :biggrin:

Reply 11

iWant.A

8

How much did you guys find the percentage difference of planks constant?

I found the gradient 8*10^-34 and I did (6.63*10^-34) - (8*10^-34) and all divided by 6.63*10^-34 and found -20% and i reversed the sign to 20%

Also what did you put for the question asking why subtracting the internal volume and the external volume gave an uncertainty of 10%

Reply 12

OP

Original post by iWant.A

How much did you guys find the percentage difference of planks constant?

I found the gradient 8*10^-34 and I did (6.63*10^-34) - (8*10^-34) and all divided by 6.63*10^-34 and found -20% and i reversed the sign to 20%

Also what did you put for the question asking why subtracting the internal volume and the external volume gave an uncertainty of 10%

I got 19%. There will be a range of answers so a range will be given. I don't remember what i wrote for the uncertainty question though.

Reply 13

takis123

Original post by iWant.A

How much did you guys find the percentage difference of planks constant?

I found the gradient 8*10^-34 and I did (6.63*10^-34) - (8*10^-34) and all divided by 6.63*10^-34 and found -20% and i reversed the sign to 20%

Also what did you put for the question asking why subtracting the internal volume and the external volume gave an uncertainty of 10%

Ok so, the %D was 18% found by (7.8-6.63)/6.63 and for the volume question you should have added their uncertainties: 4+0.1 so that you find the %U of the volume of the metal to be (4.1/15)x100%=27%>10%

Reply 14

xyzmaster

8

X in last question between 2.3-2.5 ?

Reply 15

how do we know if ln values come on x or y axis?

Reply 16

Original post by takis123

Ok so, the %D was 18% found by (7.8-6.63)/6.63 and for the volume question you should have added their uncertainties: 4+0.1 so that you find the %U of the volume of the metal to be (4.1/15)x100%=27%>10%

Da*** you talking about 27%!?!

Reply 17

OP

Original post by Lallana 11

Da*** you talking about 27%!?!

Exactly. 27%?! I didn't get that either.

Reply 18