AQA AS physics paper 1 unofficial markscheme - 14 May 2019

Watch
This discussion is closed.
Shilen07
Badges: 7
Rep:
?
#1
Report Thread starter 2 years ago
#1
Any one happy to upload the unofficial markscheme here
1
username4167452
Badges: 18
Rep:
?
#2
Report 2 years ago
#2
yhh if we can get it like last years with the questions on it too
1
LivanC21
Badges: 6
Rep:
?
#3
Report 2 years ago
#3
Question One - Work our specific charge of Duetirium 1.6 x 10^-19 / 2x 1.674 x 10^-27

= 4.78 x 10^7
2
LivanC21
Badges: 6
Rep:
?
#4
Report 2 years ago
#4
Tritium cannot go through alpha decay - due to baryon number conservation
Beta decay forms helium -3 so beta decay is the right answer
1
detdom
Badges: 3
Rep:
?
#5
Report 2 years ago
#5
It said that an isotope is formed and both alpha and beta decay affect proton number, so must be electron collision.
(Original post by LivanC21)
Tritium cannot go through alpha decay - due to baryon number conservation
Beta decay forms helium -3 so beta decay is the right answer or whatever the third option was.
1
aqaboy
Badges: 6
Rep:
?
#6
Report 2 years ago
#6
(Original post by detdom)
It said that an isotope is formed and both alpha and beta decay affect proton number, so must be electron collision.
No I think you misread the question. I believe it was asking for a decay which will produce another element. Only beta minus decay is possible.
2
shivthakur
Badges: 6
Rep:
?
#7
Report 2 years ago
#7
(Original post by aqaboy)
No I think you misread the question. I believe it was asking for a decay which will produce another element. Only beta minus decay is possible.
yeah you are correct also it was a 3 marker so the better answer would be to say why electron collision isnt possible as it would form a atom with zero protons which is not possible so beta decay is right
2
shivthakur
Badges: 6
Rep:
?
#8
Report 2 years ago
#8
anyone else find that super easy the only question i messed up on was the resistance question as i used 2 into emf thinking it was 2 cells instead of one battery and that messed me up but everything else was pretty fine
0
shivthakur
Badges: 6
Rep:
?
#9
Report 2 years ago
#9
what did everyone get for the energy stored as elastic strain energy and if you could reach 50m
i said you couldnt because mgh for 50m is higher than the elastic strain energy at the begining so you cant have energy created
0
angad1102
Badges: 1
Rep:
?
#10
Report 2 years ago
#10
yeah I got the same
(Original post by shivthakur)
what did everyone get for the energy stored as elastic strain energy and if you could reach 50m
i said you couldnt because mgh for 50m is higher than the elastic strain energy at the begining so you cant have energy created
0
angad1102
Badges: 1
Rep:
?
#11
Report 2 years ago
#11
What did you guys get for the resistance question, the one with the LED and the graph?
0
Chelsea Kaye
Badges: 1
Rep:
?
#12
Report 2 years ago
#12
****ed it i got like 50 ohms
(Original post by angad1102)
What did you guys get for the resistance question, the one with the LED and the graph?
0
arothman101
Badges: 6
Rep:
?
#13
Report 2 years ago
#13
I got something in the 300 s can remember exact number
(Original post by Chelsea Kaye)
****ed it i got like 50 ohms
0
shivthakur
Badges: 6
Rep:
?
#14
Report 2 years ago
#14
is this the same angad from desc
(Original post by angad1102)
What did you guys get for the resistance question, the one with the LED and the graph?
0
angad1102
Badges: 1
Rep:
?
#15
Report 2 years ago
#15
yes boss
(Original post by shivthakur)
is this the same angad from desc
0
Lou1331
Badges: 3
Rep:
?
#16
Report 2 years ago
#16
I also got Around 50
(Original post by arothman101)
I got something in the 300 s can remember exact number
0
Germa
Badges: 1
Rep:
?
#17
Report 2 years ago
#17
(Original post by shivthakur)
what did everyone get for the energy stored as elastic strain energy and if you could reach 50m
i said you couldnt because mgh for 50m is higher than the elastic strain energy at the begining so you cant have energy created
Had the exact same answer
0
Germa
Badges: 1
Rep:
?
#18
Report 2 years ago
#18
So the emf was 7.4V therefore that is applied to each branch . Take away the 2.2v leaving 5.2 through the resistor , you had it’s current 15x10^-3 so to get r you divided v by the current . Anyone get the same ?
(Original post by shivthakur)
what did everyone get for the energy stored as elastic strain energy and if you could reach 50m
i said you couldnt because mgh for 50m is higher than the elastic strain energy at the begining so you cant have energy created
Had the exact same answer
(Original post by shivthakur)
is this the same angad from desc
0
wordisc
Badges: 5
Rep:
?
#19
Report 2 years ago
#19
What was the 6 mark question on?
0
henrythegury
Badges: 12
Rep:
?
#20
Report 2 years ago
#20
(Original post by wordisc)
What was the 6 mark question on?
On core cladding and modal dispersion and how to avoid it.
0
X
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Poll: What factors affect your mental health most right now? Post-lockdown edition

Anxiousness about restrictions easing (53)
6.02%
Uncertainty around my education (100)
11.36%
Uncertainty around my future career prospects (93)
10.57%
Lack of purpose or motivation (109)
12.39%
Lack of support system (eg. teachers, counsellors, delays in care) (44)
5%
Impact lockdown had on physical health (47)
5.34%
Social worries (incl. loneliness/making friends) (98)
11.14%
Financial worries (60)
6.82%
Concern about myself or my loves ones getting/having been ill (40)
4.55%
Exposure to negative news/social media (55)
6.25%
Difficulty accessing real life entertainment (25)
2.84%
Lack of confidence in making big life decisions (85)
9.66%
Worry about missed opportunities during the pandemic (71)
8.07%

Watched Threads

View All