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Unit 5 Physics Edexcel A2 and Edexcel IAL

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It is wrong I think.

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I think its wrong because i didnt substract my answer from initial temperature , othewrise the answer would be 11.6 oh well just 1 mark lost

Reply 301

LypeX

Original post by blahblah21

anyone get around 41.something for the new activity?

Me and all my friends got around 42, I think it depends on the rounding you used

Reply 302

callum9977

If I used 75 as t for the activity question (2015 - 1950 = 75 derp) - but did the decay constant and A = A0 e^-kt correctly, how many marks lost?

Reply 303

josephinemar25

Crap crap crap crappy crap crap :frown:

anyone find that paper hard???

Reply 304

Qcomber

Original post by josephinemar25

Crap crap crap crappy crap crap :frown:

anyone find that paper hard???

GCE or IAL? I found the gce paper tough indeed

Reply 305

username1162972

Original post by Pudge666

For the trignometry parallex question can you explain it by drawing the diagram

Yeepp!
I copied the one from mark schemes and added some explanation.

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Reply 306

username1162972

Original post by callum9977

If I used 75 as t for the activity question (2015 - 1950 = 75 derp) - but did the decay constant and A = A0 e^-kt correctly, how many marks lost?

2 probably.

Posted from TSR Mobile

Reply 307

username1162972

Original post by Pudge666

I think its wrong because i didnt substract my answer from initial temperature , othewrise the answer would be 11.6 oh well just 1 mark lost

Did you add the mc respectively for each object?

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Reply 308

Pudge666

Original post by physicsmaths

Did you add the mc respectively for each object?

Posted from TSR Mobile

Yes

Reply 309

Joshthemathmo

Original post by physicsmaths

Did you add the mc respectively for each object?

Posted from TSR Mobile

I got 11.6 for the temp, I added the m and c respectively. Would I lose 1?

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Reply 310

ColeNate

5 minutes
Power 650 Watts
E = Pt = 5 x 650 x 60 = 195000J

Then there were two mcθ you had to equate to?

(edited 7 years ago)

Reply 311

WeLikeIke

To get an a* in physics do you need an a* in both unit 4 and 5 or just average across unit 4 and 5???

Reply 312

pineneedles

Original post by Middriver

How did you do it?

Power * 5 * 60 = (raspberry mass + pan mass) * (c for raspberry + c for pan) * delta T

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Reply 313

Middriver

Original post by ColeNate

5 minutes
Power 60 Watts
E = Pt = 5 x 60 x 60 = 18000J

Then there were two mcθ you had to equate to?

Power was 650W?

Reply 314

Joshthemathmo

Original post by pineneedles

Power * 5 * 60 = (raspberry mass + pan mass) * (c for raspberry + c for pan) * delta T

Posted from TSR Mobile

Same

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Reply 315

Middriver

Original post by pineneedles

Power * 5 * 60 = (raspberry mass + pan mass) * (c for raspberry + c for pan) * delta T

Posted from TSR Mobile

Ah right thanks.

Reply 316

LypeX

Original post by WeLikeIke

To get an a* in physics do you need an a* in both unit 4 and 5 or just average across unit 4 and 5???

Average across both, so you could get 100% in U4 but 80% in U5, also remember your coursework needs to be 90% UMS

Reply 317

WeLikeIke

Original post by LypeX

Average across both, so you could get 100% in U4 but 80% in U5, also remember your coursework needs to be 90% UMS

Thanks thats a relief

Reply 318

Pudge666

Tbh it was an alright paper considering physics is my weakest subject , however there was some mind**** questions like that specific heat capacity being inversly propotional to atomic mass LOL

Reply 319

ajaxkiller

mandem physics is a myth i just want a B lool

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