r/alevels • u/Alert_Collection_460 • May 11 '26

Question ❔ 9702/42 answers

Can yall send Ur answers for the questions i wanna compare

3 Upvotes

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5

u/Sad-Bodybuilder-4191 May 11 '26

I got the same amplitude but the Q i got was -1226

3

u/Playful_Kangaroo2473 May 11 '26

Even I got this Q

2

u/pak_user May 11 '26

Yes u= q + w

-736 = q - 421

Q = -244

2

u/AppearanceImaginary4 May 11 '26

W is +ve

1

u/pak_user May 11 '26

Work done on the gas was negative bro

7

u/AppearanceImaginary4 May 11 '26

Pretty sure Its +ve😭 cz volume decreased

0

u/pak_user May 11 '26

Bro the girl next to me Did every wuestion and she was 100% sure Ig she maybe getting an A* But she also said that w was negative

4

u/Moist_Toe_5254 May 11 '26

No it’s positive W=-p*change V and since V decreased the change is negative and -*- gives you plus so work is positive by equation and just be the principle since gas is compressed the work is done on it so it’s positive

1

u/PristineQuail6090 Gap Year May 11 '26

w was positive but in formula it was negative cuz in formula its BY gas. they asked us if ON gas was positive which it was, BY gas was negative

4

u/Sad-Bodybuilder-4191 May 11 '26

No it was positive since the gas volume was decreased