OCR Physics A Breadth of Physics (24th May 2016) Discussion

Original post by mm_7

do you think that depth will be as hard as todays paper?

I think it will be slightly harder because they didnt ask anything on quantum or materials- they could have two experiment questions to do with Young Modulus or Planck's Constant... thats what I'm predicting

Reply 302

Parhomus

8

Any clue on grade boundaries since in the old spec around 70% was an A so with a new spec and tricky questions I'm guessing it won't be high. Probably around 60% to 70%?

Reply 303

chenhao96

something about the braking distance, graph does not pass the original why error does not affect value something how did you guys explain that

Reply 304

whyyy

1

i think there will be moments and projectile motion on depth also since it was not on the breadth

Reply 305

Parhomus

8

Original post by Parhomus

Any clue on grade boundaries since in the old spec around 70% was an A so with a new spec and tricky questions I'm guessing it won't be high. Probably around 60% to 70%?

Only asking because I need a high A like above 90ums and I made a couple silly mistakes.

Reply 306

Original post by WhizzKidhehe:)

I think it will be slightly harder because they didnt ask anything on quantum or materials- they could have two experiment questions to do with Young Modulus or Planck's Constant... thats what I'm predicting

😭😭🔫 I found this difficult and the fact that the next one is harder 😭 Wow.. there goes my AS grade

Reply 307

did everyone find it difficult or is it just me?

Reply 308

Grade Boundary Prediction?

Reply 309

Original post by whyyy

how did did you do the density question can someone explain please?

Work out the weight of water displaced (9.0-7.8) = 1.2N

Calculate the volume of water displaced: ((1.2/9.81))/1000 = 1.22324159x10^-4

This is equal to the volume of the whole object submerged.

Calculate the density of the object: ((9.0/9.81)/1.223324159x10^-4

That equals density = 7500kgm^-3

Reply 310

dhruz789

1

Original post by chenhao96

something about the braking distance, graph does not pass the original why error does not affect value something how did you guys explain that

because the gradient tells you the acceleration and as all the values changed by the same amount, gradient is unaffected, so value for acceleration is unaffected.

Reply 311

Original post by mm_7

😭😭🔫 I found this difficult and the fact that the next one is harder 😭 Wow.. there goes my AS grade

Trust, it will actually not be that bad. I also predict percentage uncertainties and drawing graphs will come up as well. Just try to focus on getting these things all ok and learn the experiments, it will actually not be too bad.

I found the multiple choice harder than the rest of the paper!

Reply 312

Original post by WhizzKidhehe:)

Trust, it will actually not be that bad. I also predict percentage uncertainties and drawing graphs will come up as well. Just try to focus on getting these things all ok and learn the experiments, it will actually not be too bad.

I found the multiple choice harder than the rest of the paper!

Same! I guessed 10 out of the 20 questions!
How did you think you did overall?

Reply 313

Original post by mm_7

Grade Boundary Prediction?

I think 54/70 for A
47/70 for B
40/70 for C
33/70 for D

Reply 314

voltz

Original post by WhizzKidhehe:)

I got 78.2 m/s

I got 6.8 aswell but a lot of people got 78.2:/

Reply 315

sddsfsdafs

1

Same, how many silly mistakes do you think you made? I know I made a few marks worth and have probably lost marks elsewhere (e.g. how to get that third mark for the LED question)...

Reply 316

RiahDawson

17

Does anyone remember the multiple choice uncertainty question? It was like +- 0.1 and +-0.4? What was the rest of the numbers?

Reply 317

Original post by WhizzKidhehe:)

I think 54/70 for A
47/70 for B
40/70 for C
33/70 for D

I honestly think I got less than 30 ..

Reply 318