dT/dt = k(T-25) ?but wasnt the integral dt/dT = 1/k x 1/T-25 or whatever but 1/k out the front (positive 1/k)
idk i just had e^kt, but didnt know if i had to somehow make it e^-kt but i got around 38/9mins so i assume it workeddT/dt = k(T-25) ?
I see what you mean, so k better be negative since T is increasing and (T-25) is negative. Btw did the question ask you to find k or not , if it didn’t and just wanted you to find the time I guess you can do either way?
no its just k is negativeidk i just had e^kt, but didnt know if i had to somehow make it e^-kt but i got around 38/9mins so i assume it worked
as in the value of ln3/4 all on 8 is negativeno its just k is negative
no its already negative cus the number in the log is less than 1as in the value of ln3/4 all on 8 is negative
cool but you didnt have to specify e^-kt, it just did it itself by doing e^kt and solving for kno its already negative cus the number in the log is less than 1
lad says he has em, but cbf to chuck em up, i think the conquerhsc discord isur best bet, theyre doing like a live solns sesh rn.anyone got pdf of paper/worker solutions also?
just kinda wanna see the answers/questions to see the mark ill probs getlad says he has em, but cbf to chuck em up, i think the conquerhsc discord isur best bet, theyre doing like a live solns sesh rn.
91-93 i reckon. I still dont get why people thought this year's paper was harder than last year's, 2020 was sum wacky stuff lolwhat do u guys think a 85-90 raw will scale to?
or maybe they didnt study as much.... O_OIs anyone else worried that the raw mark to hsc mark conversion will be a lot worse this year because everyone has had more time to study?
I mean last year it was 73 for a 91 iirc, but this year id say 80~ raw should be fine?lol what is a good raw mark for e4
I really dont think this year was easier, all last year had was a perms and combs qI mean last year it was 73 for a 91 iirc, but this year id say 80~ raw should be fine?
nah this yr was slightly easier for sureI really dont think this year was easier, all last year had was a perms and combs q
curious about what to you was hard in 2020 and what was hard in the 2021 paper to younah this yr was slightly easier for sure
i cant see how it was harder this yr
in 2021 it was just the last part of the last questioncurious about what to you was hard in 2020 and what was hard in the 2021 paper to you
fair enough honestly would say more in 2021 other than last part of q14 but maybe you are better at these topics them mein 2021 it was just the last part of the last question
everything else was quite chill tbh
2020 it was iii and iv from 14a