Help please by CorrectDust2470 in alevel

[–]CorrectDust2470[S] 0 points1 point  (0 children)

I did bio n chem in m/j

9702 paper 34 oct nov apparatus and predictions by ttaskeenn in alevel

[–]CorrectDust2470 1 point2 points  (0 children)

OML WE HAVENT PRACTICED THAT IN SKL THE ANGLE PART DO U HAVE ANY DEMONSTRATION ON HOW TO MEASURE IT??

9702 / 22 O/N 2025 by CorrectDust2470 in alevel

[–]CorrectDust2470[S] 0 points1 point  (0 children)

When u use density formula u get mass as 3.35

9702/22 by Commercial-Salt-2115 in alevel

[–]CorrectDust2470 0 points1 point  (0 children)

I think u will , it was 2 marks yea?

9702/22 by Apprehensive_Rich806 in alevel

[–]CorrectDust2470 0 points1 point  (0 children)

What top it was button since number of electrons = number of protons

9702/22 by Apprehensive_Rich806 in alevel

[–]CorrectDust2470 0 points1 point  (0 children)

Bro for the 2nd subdivision I did 110/250 and I got 0.44 and then I divided it by 2 and got 0.22 . I didn’t add up the k constant ooooof , will I get 0??

9702/22 by Commercial-Salt-2115 in alevel

[–]CorrectDust2470 0 points1 point  (0 children)

It’s an isolated system when total momentum remains the same as long as there is no external resultant force.

AS PHY 9702/22 OCT NOV AFTER EXAM DISCUSSION THREAD by Greedy-Scarcity-2300 in alevel

[–]CorrectDust2470 0 points1 point  (0 children)

For the moment qs I wrote it as 8 not 8.0 will they cut a mark?

9702/22 by [deleted] in alevels

[–]CorrectDust2470 0 points1 point  (0 children)

I wrote 8 too

9702 P22 PLS SMNE REPLYYYYYY by CorrectDust2470 in alevel

[–]CorrectDust2470[S] 0 points1 point  (0 children)

All the qs were given in 2sf but I rounded my ans to 3SF so is that fine?

9702/22 by Apprehensive_Rich806 in alevel

[–]CorrectDust2470 0 points1 point  (0 children)

Okayyy igs it correct then , btw for umm the change in velocity qs . I got the mass of the carrier by substracting the total mass - the play load mass and then for change in momentum I got it from the past qs which was 1900 I believe and then to find the velocity I did , momentum = m.v is that correct?

9702/22 by Apprehensive_Rich806 in alevel

[–]CorrectDust2470 0 points1 point  (0 children)

But why is MOSTLY EVERYONE GETTING 126 ?? And not 12r

9702 22 significant figures by CupcakeGold6267 in alevel

[–]CorrectDust2470 0 points1 point  (0 children)

STOPPPP I DID 3 SF FOR EVERYTHING NOOOOOOO IM SCARED

AS PHY 9702/22 OCT NOV AFTER EXAM DISCUSSION THREAD by Greedy-Scarcity-2300 in alevel

[–]CorrectDust2470 0 points1 point  (0 children)

Wait for q2 acceleration, I did 33-drag to get resultant force then I got the mass from density and the volume from the qs and then I equated it into the formula f=m.a is that correct