R was not constant. It's rate of decrease was constant, but r was gradually decreasing. So the answer was 62 seconds.Yah! i got like 20.68s from integrating the dV/dt equation and subbing in 'r' -> which i think was a constant in the formula
R was not constant. It's rate of decrease was constant, but r was gradually decreasing. So the answer was 62 seconds.Yah! i got like 20.68s from integrating the dV/dt equation and subbing in 'r' -> which i think was a constant in the formula
'r' is not a constant.Yeah im starting to think its wrong --> people are getting around 60s with a different method --> maybe it was the assumption that r was a constant was wrong =/
I found r when the volume was 10^-6 by subbing it into the V formula and rearranging, and then i subbed that value into the integration of dr/dt (once i had found the constant) and rearranged to get the time.Yeah im starting to think its wrong --> people are getting around 60s with a different method --> maybe it was the assumption that r was a constant was wrong =/
Yeah i know now'r' is not a constant.
90+hi! What would mark would 52-55 raw get? And what would be the estimated e4cut off?
Crap. I have the same issue.Hi guys, for the further graphs question, i drew it in pencil. Apparently though when they scan it, it doesn't pick up on pencil, at least thats what my friend told me. Is this correct cos i'm really worried now. Should i send an email to bored of studies?
I've always drawn graphs in pencil :/
You integrate from Dr/dt to r= some constant t from i)How do you do Question 13aii? I integrated and somehow ended up with .
It's alright. I asked my teacher that this morning. He said it does scan, just as long as the drawing was dark enough. Plus I'm sure they will be able to see it.Hi guys, for the further graphs question, i drew it in pencil. Apparently though when they scan it, it doesn't pick up on pencil, at least thats what my friend told me. Is this correct cos i'm really worried now. Should i send an email to bored of studies?
I've always drawn graphs in pencil :/
You find r when v= 10^(-6)How do you do Question 13aii? I integrated and somehow ended up with .
I just did it again and got 62.04 seconds ;_; 0/2 dammit LOL 1/2 if we're luckyYeah i know now