Search results

possible errors : - the passage of some BaSo4 through the sintered glass filter because of the fine precipitate - leaving some precipitate sticking to the walls of the beaker while transferring the mixture - loss of BaSO4 due to its small but significant solubility - Loss of some precipitate...

in the exam they will provide a unique flowchart to you you use that flowchart to record info not the one off your memory.

$100 for a question O_o something sounds fishy

i hate that shit lol most of the times i cant remember the formulas and have to derive them myself >< best way is to skip it and move on

you'd have to integrate twice then, and when integrating by parts you dont use a substitution o-o only u du , dv v isn't it? that would be substitution not by parts then i guess.

drongoskis method is prob best, but you could also try integration by parts (which is messy)

motion prob the hardest topic because it deals with integration and other small topics. in the beginning it's difficult and you wont understand shit, but you will slowly get used to it. i found it hard initially, but after some practice im getting the hang of it. its just like any other topic

finished mechanics gna do harder 3u next mechanics is killing me >< so yeah around same point, but i think my teacher is on nos still

this is why bio people are so elll ooooohhh elll to me bio is somewhat remembering than common sense xP just use one light and put a transparent, but coloured sheet over the light (the ones you use in primary)

i did mine on salmon :L bigger fish = more food bt cotton easy to remember + common

Beadle and Tatum: Carried out experiments to find a connection between enzymes and genes. They used the bread mould Neurospora crassa as their experimental organism. To obtain mutant forms they exposed the bread mould to X-rays or UV radiation. Each mutant showed a difference in one gene which...

nice proooo x=Asin(nt+K)+B x'=Ancos(nt+K) x"=-An^2.sin(nt+K) Max speed occurs at x"=0 ie. t=-K/n. x'=An.cos(0)=An. Thus, max speed is An. Time for 1 osscillation is: T=2pi/n v=s/t => v=4A/(2pi/n) => v=2An/pi At max speed: An:2An/pi 1:2/pi => 2 : pi ratio on the line v = s /t s...

centre of motion meaning origin? a = 8 n = pi /3 x = 8sin (pi/3) t v = 8pi / 3 cos(pi/ 3)t x: = -8pi^2 / 9 (sin (pi/3) t ) sub in when x = 5 to find t then sub into v and x:

i was first in line bro :P

Show that for any particle moving in SHM, the ratio of the average speed over one oscillation to the max speed is 2 : pi. :p

a) rock speed :10t (downwards) stone speed: v - 10t (upwards) xr = -5t^2 + C t = 0, xr =180 hence C = 180 xr = 180 - 5t^2 ->1 xs = vt - 5t^2 + D t=0, xs=0 xs = vt - 5t^2 ->2 for collision xs = xr vt - 5t^2 = 180- 5t^2 vt = 180 t = 180 / v...

d/dx arc cos (2rootx) u = 2rootx du = dx / rootx d/dx arc cos (2rootx) = - 1 / root(1 - 4x) . root x

integrate from -pi/6 to pi/3 4sin^2@ use identity sin^2x = (1-cos2x)/2 to modify you shall get teh answer pi - root 3

Re: another question farr bos was down when i posted. if you want the working out ill post it the next time i visit this thread (non t forumla way)

Re: another question t formula the complete answer is 45 deg, 114 deg 18 min, 225 deg, 335 deg 42 min. off to bed now :)