AQA GCSE Physics Paper 2 (Higher Tier) 8463/2H - 23 Jun 2022 [Exam Chat]

Anyone remember the question about the cars thinking distance? How can a car have a thinking distance? The question was; How would a person's slower reaction time affect a cars thinking distance!

Reply 81

Unknown3409

8

Also what did people write for why the block was stationary?

Reply 82

davidfor

6

Original post by Jason:(

you forgot the block was 10cm height anyway. so the answer was 1083 not 1040. I made your mistake then corrected

Are you sure? I don't think you actually had to do anything with the height since you only needed the surface area of the top of the block.

Reply 83

sewey1

6

how did people get 7.71 i got 7.666 then rounded it to 7.7

Reply 84

antis13

1

Original post by davidfor

Are you sure? I don't think you actually had to do anything with the height since you only needed the surface area of the top of the block.

You needed the height of the column of water to work out the density of the water

Reply 85

ShakaShoufle

1

Original post by Unknown3409

Also what did people write for why the block was stationary?

i think it was cuz the weight of the water above the brick was high as it was at the bottom of the pool and it combined with the weight of the brick itself was greater than the bricks upthrust because it couldnt displace its own weight in water

Reply 86

JS234780

2

Original post by davidfor

Are you sure? I don't think you actually had to do anything with the height since you only needed the surface area of the top of the block.

I think so...
Pressure on top surface P=F/A, P=637/0.025, P=25480 Pa

Depth of column to bottom = 2.5m, therefore, depth to TOP surface is 2.4m

Density = pressure / hg, = 25480/(2.4*9.8) = 1083 kg/m2????

Reply 87

davidfor

6

Original post by antis13

You needed the height of the column of water to work out the density of the water

Oh yeah, I did use that. I meant as in the height of the block not the column of the water.

Reply 88

davidfor

6

Original post by Unknown3409

Also what did people write for why the block was stationary?

I said something like the weight is greater than its upthrust, so the resultant force is 0 meaning it is going to remain stationary

Reply 89

reubenn05

Universities Forum Helper

13

Original post by oliviapope1

which question was the 7.71 for?

one with the hailstone and the graph with the mass and terminal velocity

Reply 90

davidfor

6

Original post by JS234780

I think so...
Pressure on top surface P=F/A, P=637/0.025, P=25480 Pa

Depth of column to bottom = 2.5m, therefore, depth to TOP surface is 2.4m

Density = pressure / hg, = 25480/(2.4*9.8) = 1083 kg/m2????

I think what they meant by the height was from the top of the surface of the block, not the bottom of the block. I don't remember the question fully so they might have mentioned it was from the bottom of the block, but I'm not sure.

Reply 91

killuak

15

Density 6 mark question was: 10400
Last Question was: 12 300

Trust me these are the correct answers, those of you that got something like 10400 did not do the conversions correctly.
Edit: yes mb i fixed the number

(edited 1 year ago)

Reply 92

minnierocks

12

Original post by potatoes25

i got 12300 but idk if i did it right

I got that too

Reply 93

minnierocks

12

Original post by banana8224

Density 6 mark question was: 10.4
Last Question was: 12 300

Trust me these are the correct answers, those of you that got something like 10400 did not do the conversions correctly

Do you know how many marks the last one was worth?

Reply 94

cyclopedi

7

for the F=BIL questions, what was the assumption?

Reply 95

killuak

15

Original post by minnierocks

Do you know how many marks the last one was worth?

The last question was a 3 marker

Reply 96

killuak

15

Original post by cyclopedi

for the F=BIL questions, what was the assumption?

Current remains the same / No current is dissipated into the surroundings, anything along those lines would be correct.

Reply 97

JS234780

2

Original post by davidfor

I think what they meant by the height was from the top of the surface of the block, not the bottom of the block. I don't remember the question fully so they might have mentioned it was from the bottom of the block, but I'm not sure.

I think they said it was the bottom..... but I’m not entirely sure!!! Like you, I would need to see the question again to be 100% sure. Either way, one way of working will get all 6 marks, and another way might get 4/5, which isn’t too detrimental. :smile:

Reply 98

ArcticSquip

6

Original post by Jimmy Anderson

Anyone else think aqa were sneaky for putting a whole question on transformers and magnets despite it being low tariff content???

It’s annoying. Especially as momentum being a major focus was just a 3 mark calculation

Reply 99

JS234780

2

Original post by cyclopedi

for the F=BIL questions, what was the assumption?

I said that the assumption was that the cable was perpendicular to the Earth’s magnetic field... It mentions that as an assumption of the equation in the spec I think!

AQA GCSE Physics Paper 2 (Higher Tier) 8463/2H - 23 Jun 2022 [Exam Chat]

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