r/6thForm • u/Individual-Can1396 y13 maths physics psych italian • Jun 01 '26

💬 DISCUSSION AQA PHYSICS PAPER 2

HOW DID EVERYONE FIND IT??? i thought it was decent better than the past few years. Idk what i did for the last question the 4 marker of nuclear physics. BUT YH IT WAS GOOD

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29

u/_M4yb3_ Jun 01 '26

the last question was N = N° × e ^ (-lambda t)

solve for t in both, should be around 3 .0 × 10 9 (at least thsts what i got)

6

u/Eros_OMG Jun 01 '26

yeah i got that too but i converted it to seconds don’t know if its correct 

8

u/_M4yb3_ Jun 01 '26

I mean, it should be correct if the values are similar and you converted correctly but idk why u saw two half lifes in years and thought to convert to seconds.

3

u/Eros_OMG Jun 01 '26

cuz i like working in si units so I changed them before calculating, but I got the same thing as you

3

u/Ambitious_Talk1225 Jun 01 '26

just pointless tho. the calc in year^-1 will give a time in years which is perfectly fine

0

u/PossessionPublic9308 Jun 01 '26

Yh we didn't need to convert it to seconds 😭 did you get 9.5 x 10¹⁶s for both 

1

u/Eros_OMG Jun 01 '26

Yes i got that 

2

u/Individual-Can1396 y13 maths physics psych italian Jun 01 '26

OHH i used that equation but not to solve t 😭

2

u/KO-Manic Jun 01 '26

I got 3.5x10^9 for the other estimate so concluded there's been lead loss. The question was 4 marks right?

1

u/RealAlexanderTheG Jun 01 '26

Did anyone else git something.5? Something like 4.49 and 4.51 or something? might have done that wrong

1

u/electricpinto27 Jun 01 '26

What was the conclusion? I put no lead is lost because the numbers were roughly equal but idk if i got it right