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2016 Official AQA New Spec AS Level Physics Paper 1 - 24th of May 2016

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Reply 380

ciera1999

I said b for lift and d for bungee jump for 6 marker

Reply 381

HasanRaza1

Original post by Shk

What did people say for the 6 marker??

A not suitable for either too brittle
B suitable for lift as it has a high UTS, high breaking stress, and can experience some plastic flow under periods of high stress so it wont snap straight away
C suitable for bungee as it has a relatively high UTS and breaking stress, but also exhbiits a lot of plastic flow so it can stretch
D not suitable for any as its yield point is too low so it will stretch and give too easily

Reply 382

JemFink

I thought it was just one wavelength between the 3 antinodes. Cus if there's 3 nodes or 3 antinodes then it's gonna be 1 wavelength. Don't quote me on that

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Reply 383

Lola1244

did anyone get 9.00 times ten 23???
what was the rest energy again

Reply 384

Inam97

Original post by JemFink

I thought it was just one wavelength between the 3 antinodes. Cus if there's 3 nodes or 3 antinodes then it's gonna be 1 wavelength. Don't quote me on that

Same I just used 12cm as the wavelength

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Reply 385

medicapplicant

Original post by haes

That's what i did but i rounded to 12cm lol.. But because it was 5 marks i think we had to do something else :/ unless marks were awarded for significant figures..

my teacher said (from what he thought the question was) we had to times the answer we got by three because they wanted the 3rd resonant frequency because the stationary wave was divided into 3 loops. Don't know if that's right tho

Reply 386

yorkshire_tea_

I was expecting much worse for the 6 marker, i put B and D. B had highest breaking stress and D didnt need a particulary high breaking stress (only carrying a person rather than lift) and reaches elastic limit relatively soon and therefore stretches a fair bit (good for bungee chord)

Reply 387

haes

Original post by monoman

The wavelength wasn't 12. It was actually 6cm because use need the of one wave not the 3

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Wasn't it 3 half waves and therefore 8cm for one whole wave? (I wrote this in my working out somewhere just in case 12 was wrong)

Reply 388

medicapplicant

Original post by monoman

The wavelength wasn't 12. It was actually 6cm because use need the of one wave not the 3

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distance between adjacent nodes is 1/2 wavelength and the distance between adjacent nodes was 6 approx so the wavelength = 12 approx

Reply 389

champ_mc99

Original post by kingaaran

Double slit is not a practical - it can easily be asked to be explained rather than described.

Plus I'm not sure from where everyone is getting this idea that practicals won't be tested in paper 1. You're right in saying data ANALYSIS is in paper 2, but discussing the set up, limitations and conclusions from a practical can appear in either paper

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Hmmmm... I guess we know now. :tongue:

Reply 390

maximo17000

Original post by haes

I didn't get a 10^-9 but yeah i used that equation after measuring the length with a ruler

Did you divide by 100 to get the length in m? And did you measure from the first black dot to the last one? That's what I did, I might have just remembered my answer wrong lol

Reply 391

Exavior

Original post by TheKevinFang

I got f = c/wavelength = 3x10^8 / 0.118m (11.8cm?)

Would that be correct?

I got this answer as well, yay!!!

Reply 392

Logic4Life

Original post by TheKevinFang

I got f = c/wavelength = 3x10^8 / 0.118m (11.8cm?)

Would that be correct?

I got that at first but then realised it was 5 marks so that seemed to generic. I then found the waverlength to be 0.24 as is was the second harmonic then subbed that in getting 1.25 x10 to the power of 9.

Reply 393

haes

Original post by maximo17000

Did you divide by 100 to get the length in m? And did you measure from the first black dot to the last one? That's what I did, I might have just remembered my answer wrong lol

I divided by 100 but surely a frequency is much larger than that?

Reply 394

Exavior

Original post by yorkshire_tea_

I put B and D as well!!!

Reply 395

medicapplicant

Original post by ciera1999

I said b for lift and d for bungee jump for 6 marker

i said that

Reply 396

asinha10

Original post by Exavior

I put B and D as well!!!

nah man the bit before the curve is the limit of proportionality so the thing will deform under little stress. It's C because the limit of proportionality is much higher and it still stretches but will return back to its original shape.

Reply 397

medicapplicant

Original post by Exavior

I put B and D as well!!!

same! what did you put for the property and explanation for A

Reply 398

Logic4Life

A was brittle.
For the force on the airplane I got 850N.
Last question was a positron and an Electron neutrino to conserve charge and lepton number I think. Also weak interaction
Why were 2 photons emitted? Pair production to conserve momentum and energy.
Isotope has the same proton number for different amount of neutrons.
The chocolate one. Melted chocolate produced at areas on Destructive interferenece at Nodes I think not sure