Hey guys, here is a started version of the mark scheme, credit to Uzair ALi and Carmen Chui.
lets get the rest of answers and also lets see which questions were how many marks
AQA AS Physics Paper 1  Unofficial Mark SchemeNOTE: These are not entirely in order, and some answers may be inaccurate.
Question 1)a) In a jet engine, air enters at A and its velocity increases before leaving at B. What happens to its momentum?
The momentum increases as p = mv and the mass is constant but the velocity increases hence the momentum increases.
b) Why does air leaving the jet engine at B lead to an accelerating force on the aircraft.
Newton's 3rd law, equal force had an equal and opposite reaction force therefore it is thrusted forwards. Air moves out back, so plane moves opposite to direction of air. .
c) In one second, 210kg of air passes through the jet engine and the velocity of the air is increased by 570m/s. Work out the maximum accelerating force of the air on the jet engine.F = m x a or F = (mv)/t Force = 210 * 570 or Force = (210*570) / (1) Force = 119700 N (120000N 2s.f, or1.2x10^5)
d) When landing, the aircraft uses a deflector plate to use the air flowing through the jet engine to decelerate the aircraft. Does the momentum of the air change after the deflector plate is used?
The momentum of the air then changes because the air changes direction via the deflector plates.Momentum is a vector quantity with direction as a factor.
e) There is a decelerating force of 190kN on the aircraft which has a mass of 7x10^4Kg Work out the deceleration of the aircraft.190000 = 7x10^4 * aA = 2.714205A = 2.7m/s^2Deceleration is 2.7m/s^2f)
Assuming a constant decelerating force of 190kN, work out the distance taken for the aircraft to come to rest. The aircraft lands with a velocity of 68m/s.v^2 = u^2+2as0^2 = 68^2 + 2*2.714205 (value of a from previous question)*sS = 851.78947s= 850m (2s.f.)
2)a) Suggest how a stationary wave can be formed in the microwave.
Microwave travels through the oven and reflects at the oven wall, superposition of 2 waves travelling in opposite directions with the same frequency creates a stationary wave. Same frequency/wavelength and same amplitude while travelling in opposite directions.
b) Wavelength = 11.8cm = 0.118mC=f(wavelength) f=c/(wavelength)=3x10^(8)/0.118=2.54x10^(9)m(If the measurement was 11.8cm. Mark scheme will probably allow 11.7  11.9cm)
c) Why do microwaves usually have a turntable?
Microwaves need a turntable to ensure food is heated evenly and not just at specific points of constructive interference.
(We should do the question about the long pipe probe and the diameter of the wire(P = RA/L)) length:0.5m
Calculate the total resistance of the circuitV=IR V=1.5, I=0.66 R=2.3 ohms
Define Tensile stress and strain
Stress = force applied per cross sectional area F/A
Strain = ratio of the extension to the original length (delta)L/LWhat property does
material A show?Brittle  breaks without deforming plastically
or Obeys ohms law, as force is proportional
Why are 2 protons produced in the annihilation of helium and anti helium nuclei?To conserve momentum and energy CalculSecond
Last question ) Anti Neutron > Anti Proton + Positron(E+) + Electron neutrinod)
Which interaction is responsible for the above interaction? Weak interation
2016 AS physics new spec MARK SCHEME
Announcements  Posted on  

TSR's new app is coming! Sign up here to try it first >>  17102016 

View Poll Results: what do you think you got out of 70Below 1021.30%112042.60%2130127.79%31402516.23%41505133.12%51603824.68%61702214.29%Voters: 154. You may not vote on this poll

 Follow
 1
 24052016 20:10
Last edited by Science_help; 25052016 at 00:37.Post rating:3 
 Follow
 2
 24052016 20:18
(Original post by Science_help)
Hey guys, here is a started version of the mark scheme, credit to Uzair ALi and Cameran Chui.

 Follow
 3
 24052016 20:21
(Original post by Science_help)
Hey guys, here is a started version of the mark scheme, credit to Uzair ALi and Cameran Chui.
lets get the rest of answers and also lets see which questions were how many marks
AQA AS Physics Paper 1  Unofficial Mark SchemeNOTE: These are not entirely in order, and some answers may be inaccurate.
Question 1)a) In a jet engine, air enters at A and its velocity increases before leaving at B. What happens to its momentum?
The momentum increases as p = mv and the mass is constant but the velocity increases hence the momentum increases.
b) Why does air leaving the jet engine at B lead to an accelerating force on the aircraft.
Newton's 3rd law, equal force had an equal and opposite reaction force therefore it is thrusted forwards. Air moves out back, so plane moves opposite to direction of air. .
c) In one second, 210kg of air passes through the jet engine and the velocity of the air is increased by 570m/s. Work out the maximum accelerating force of the air on the jet engine.F = m x a or F = (mv)/t Force = 210 * 570 or Force = (210*570) / (1) Force = 119700 N (120000N 2s.f, or1.2x10^5)
d) When landing, the aircraft uses a deflector plate to use the air flowing through the jet engine to decelerate the aircraft. Does the momentum of the air change after the deflector plate is used?
The momentum of the air then changes because the air changes direction via the deflector plates.Momentum is a vector quantity with direction as a factor.
e) There is a decelerating force of 190kN on the aircraft which has a mass of 7x10^4Kg Work out the deceleration of the aircraft.190000 = 7x10^4 * aA = 2.714205A = 2.7m/s^2Deceleration is 2.7m/s^2f)
Assuming a constant decelerating force of 190kN, work out the distance taken for the aircraft to come to rest. The aircraft lands with a velocity of 68m/s.v^2 = u^2+2as0^2 = 68^2 + 2*2.714205 (value of a from previous question)*sS = 851.78947s= 850m (2s.f.)
2)a) Suggest how a stationary wave can be formed in the microwave.
Microwave travels through the oven and reflects at the oven wall, superposition of 2 waves travelling in opposite directions with the same frequency creates a stationary wave. Same frequency/wavelength and same amplitude while travelling in opposite directions.
b) Wavelength = 11.8cm = 0.118mC=f(wavelength) f=c/(wavelength)=3x10^(8)/0.118=2.54x10^(9)m(If the measurement was 11.8cm. Mark scheme will probably allow 11.7  11.9cm)
c) Why do microwaves usually have a turntable?
Microwaves need a turntable to ensure food is heated evenly and not just at specific points of constructive interference.
(We should do the question about the long pipe probe and the diameter of the wire(P = RA/L)) length:0.5m
Calculate the total resistance of the circuitV=IR V=1.5, I=0.66 R=2.3 ohms
Define Tensile stress and strain
Stress = force applied per cross sectional area F/A
Strain = ratio of the extension to the original length (delta)L/LWhat property does
material A show?Brittle  breaks without deforming plastically
or Obeys ohms law, as force is proportional
Why are 2 protons produced in the annihilation of helium and anti helium nuclei?To conserve momentum and energy CalculSecond
Last question ) Anti Neutron > Anti Proton + Positron(E+) + Electron neutrinod)
Which interaction is responsible for the above interaction? Weak interation 
 Follow
 4
 24052016 20:22
(Original post by SaltandSugar)
My name is Carmen, also i added more stuff to the original document 
 Follow
 5
 24052016 20:28
good

 Follow
 6
 24052016 20:45
(Original post by Lola1244)
where would the originial document be found
It was originally a google doc where everyone could contributePost rating:1 
 Follow
 7
 24052016 20:54
What did anyone get for the percentage question?

 Follow
 8
 24052016 20:56
(Original post by not_lucas1)
What did anyone get for the percentage question?Post rating:1 
 Follow
 9
 24052016 21:03
(Original post by SaltandSugar)
I got 2.5% lol but some people got 0.79% and 25%, apparently 25% worked if they substituted the numbers in but I'm not sure 
 Follow
 10
 24052016 21:03
For the 2876 MeV question:
=4.6016x10^10 J
E=hf
f=E/h=(4.6016x10^10)x(6.63x10^34)=6.94x10^23 
 Follow
 11
 24052016 21:37
(Original post by Science_help)
Hey guys, here is a started version of the mark scheme, credit to Uzair ALi and Cameran Chui.
lets get the rest of answers and also lets see which questions were how many marks
AQA AS Physics Paper 1  Unofficial Mark SchemeNOTE: These are not entirely in order, and some answers may be inaccurate.
Question 1)a) In a jet engine, air enters at A and its velocity increases before leaving at B. What happens to its momentum?
The momentum increases as p = mv and the mass is constant but the velocity increases hence the momentum increases.
b) Why does air leaving the jet engine at B lead to an accelerating force on the aircraft.
Newton's 3rd law, equal force had an equal and opposite reaction force therefore it is thrusted forwards. Air moves out back, so plane moves opposite to direction of air. .
c) In one second, 210kg of air passes through the jet engine and the velocity of the air is increased by 570m/s. Work out the maximum accelerating force of the air on the jet engine.F = m x a or F = (mv)/t Force = 210 * 570 or Force = (210*570) / (1) Force = 119700 N (120000N 2s.f, or1.2x10^5)
d) When landing, the aircraft uses a deflector plate to use the air flowing through the jet engine to decelerate the aircraft. Does the momentum of the air change after the deflector plate is used?
The momentum of the air then changes because the air changes direction via the deflector plates.Momentum is a vector quantity with direction as a factor.
e) There is a decelerating force of 190kN on the aircraft which has a mass of 7x10^4Kg Work out the deceleration of the aircraft.190000 = 7x10^4 * aA = 2.714205A = 2.7m/s^2Deceleration is 2.7m/s^2f)
Assuming a constant decelerating force of 190kN, work out the distance taken for the aircraft to come to rest. The aircraft lands with a velocity of 68m/s.v^2 = u^2+2as0^2 = 68^2 + 2*2.714205 (value of a from previous question)*sS = 851.78947s= 850m (2s.f.)
2)a) Suggest how a stationary wave can be formed in the microwave.
Microwave travels through the oven and reflects at the oven wall, superposition of 2 waves travelling in opposite directions with the same frequency creates a stationary wave. Same frequency/wavelength and same amplitude while travelling in opposite directions.
b) Wavelength = 11.8cm = 0.118mC=f(wavelength) f=c/(wavelength)=3x10^(8)/0.118=2.54x10^(9)m(If the measurement was 11.8cm. Mark scheme will probably allow 11.7  11.9cm)
c) Why do microwaves usually have a turntable?
Microwaves need a turntable to ensure food is heated evenly and not just at specific points of constructive interference.
(We should do the question about the long pipe probe and the diameter of the wire(P = RA/L)) length:0.5m
Calculate the total resistance of the circuitV=IR V=1.5, I=0.66 R=2.3 ohms
Define Tensile stress and strain
Stress = force applied per cross sectional area F/A
Strain = ratio of the extension to the original length (delta)L/LWhat property does
material A show?Brittle  breaks without deforming plastically
or Obeys ohms law, as force is proportional
Why are 2 protons produced in the annihilation of helium and anti helium nuclei?To conserve momentum and energy CalculSecond
Last question ) Anti Neutron > Anti Proton + Positron(E+) + Electron neutrinod)
Which interaction is responsible for the above interaction? Weak interation 
 Follow
 12
 24052016 21:48
(Original post by Science_help)
Hey guys, here is a started version of the mark scheme, credit to Uzair ALi and Cameran Chui.
lets get the rest of answers and also lets see which questions were how many marks
AQA AS Physics Paper 1  Unofficial Mark SchemeNOTE: These are not entirely in order, and some answers may be inaccurate.
Question 1)a) In a jet engine, air enters at A and its velocity increases before leaving at B. What happens to its momentum?
The momentum increases as p = mv and the mass is constant but the velocity increases hence the momentum increases.
b) Why does air leaving the jet engine at B lead to an accelerating force on the aircraft.
Newton's 3rd law, equal force had an equal and opposite reaction force therefore it is thrusted forwards. Air moves out back, so plane moves opposite to direction of air. .
c) In one second, 210kg of air passes through the jet engine and the velocity of the air is increased by 570m/s. Work out the maximum accelerating force of the air on the jet engine.F = m x a or F = (mv)/t Force = 210 * 570 or Force = (210*570) / (1) Force = 119700 N (120000N 2s.f, or1.2x10^5)
d) When landing, the aircraft uses a deflector plate to use the air flowing through the jet engine to decelerate the aircraft. Does the momentum of the air change after the deflector plate is used?
The momentum of the air then changes because the air changes direction via the deflector plates.Momentum is a vector quantity with direction as a factor.
e) There is a decelerating force of 190kN on the aircraft which has a mass of 7x10^4Kg Work out the deceleration of the aircraft.190000 = 7x10^4 * aA = 2.714205A = 2.7m/s^2Deceleration is 2.7m/s^2f)
Assuming a constant decelerating force of 190kN, work out the distance taken for the aircraft to come to rest. The aircraft lands with a velocity of 68m/s.v^2 = u^2+2as0^2 = 68^2 + 2*2.714205 (value of a from previous question)*sS = 851.78947s= 850m (2s.f.)
2)a) Suggest how a stationary wave can be formed in the microwave.
Microwave travels through the oven and reflects at the oven wall, superposition of 2 waves travelling in opposite directions with the same frequency creates a stationary wave. Same frequency/wavelength and same amplitude while travelling in opposite directions.
b) Wavelength = 11.8cm = 0.118mC=f(wavelength) f=c/(wavelength)=3x10^(8)/0.118=2.54x10^(9)m(If the measurement was 11.8cm. Mark scheme will probably allow 11.7  11.9cm)
c) Why do microwaves usually have a turntable?
Microwaves need a turntable to ensure food is heated evenly and not just at specific points of constructive interference.
(We should do the question about the long pipe probe and the diameter of the wire(P = RA/L)) length:0.5m
Calculate the total resistance of the circuitV=IR V=1.5, I=0.66 R=2.3 ohms
Define Tensile stress and strain
Stress = force applied per cross sectional area F/A
Strain = ratio of the extension to the original length (delta)L/LWhat property does
material A show?Brittle  breaks without deforming plastically
or Obeys ohms law, as force is proportional
Why are 2 protons produced in the annihilation of helium and anti helium nuclei?To conserve momentum and energy CalculSecond
Last question ) Anti Neutron > Anti Proton + Positron(E+) + Electron neutrinod)
Which interaction is responsible for the above interaction? Weak interation
Why is the reading of the voltmeter the same as the emf?
The voltmeter is connected in series with A and B. The voltmeter has an infinite resistance therefore no current flows through circuit. Emf is the P.D when no current is flowing through the circuit
complete the equation:
(anti)neutron > (anti)proton + (+)Beta + Ve
The 6 mark question (may be wrong):
For elevator material B because needs to be able to withstand large amounts of force: Weight of elevator + people inside. Also shouldn't extend a lot because the calibration of doors and elevator door may change. Needs high stress and low strain
For bungee rope, needs to extend a lot to allow the momentum of the jumper to decrease over a longer period of time to reduce force that acts upon jumper. Stress is less important as the force acting on the rope will be low (only mass of 1 person) so needs high strain but doesn't need high stress. I put down D but other put down C
Photoelectric effect question: Explain why photoemission only occurs above a certain value
Talk about E = hf and hf = work function + EK where the minimum energy needed for photo emission is work function. energy of a photon is absorbed by 1 electron therefore hf must be > work function for photo emission. hf must be at least a certain value therefore f must be at least a certain value to cause photo emission.
Cant remember anymore sorry but if I am wrong on any of the questions please correct me so that I may know 
 Follow
 13
 24052016 21:55
Hey,
For material D, wouldnt the cord just stretch to such an extent that the person hits the ground? So it must be C? 
 Follow
 14
 24052016 22:03
What did people get for the stopping potential? I got 0.9v
Posted from TSR Mobile 
 Follow
 15
 24052016 22:08
This paper looks pretty easy to me. Think I would have gotten 60/70

 Follow
 16
 24052016 22:11
(Original post by Pra99)
This paper looks pretty easy to me. Think I would have gotten 60/70Post rating:4 
 Follow
 17
 24052016 22:12
(Original post by somerandomer654)
Wow step back, we got an Einstein over here 
 Follow
 18
 24052016 22:16
(Original post by Pra99)
Lol. I wasn't trying to sound clever or anything, it's just that a lot of people were making the paper sound like it was impossible
Looking back now, it wasnt too hard...But I know I did crap...just hoping boundaries are low 
 Follow
 19
 24052016 22:24
(Original post by babyetu)
For the 2876 MeV question:
=4.6016x10^10 J
E=hf
f=E/h=(4.6016x10^10)x(6.63x10^34)=6.94x10^23
i got 9 times ten 23 
 Follow
 20
 24052016 22:25
did you convert the joules from ek max in previous question to ev?
(Original post by ben_urwinator)
What did people get for the stopping potential? I got 0.9v
Posted from TSR Mobile
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Updated: July 3, 2016
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