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is it becuase you can get ppts with clorides?

us the fact that PS=ePM.... hence the distance of the point is PS+PS' = e|PM+PM'| let the point be (x,y) the sum of the distances from the focii to the point is PS+PS' =e|distance of P to M and P from M'|=e|(a/e-x)+(a/e +x)|=e|2a/e|=2a NOTE: the distances can be easily seen from a diagram.

its not hard to remember... got me 5 easy marks in my exam:D

it equals zero?

all nitrates are soluble so ... copper nitrate has no colour. u can use a flame test. copper is a pale blue colour

OMG party poppers... keep this thread going

the photoelectric effect is the phenomena where electrons or photoelectrons are emitted from the surface of a metal given that the correct threshold frequency is provided. Classical wave theory suggests that as the waves of light hit the surface, the light energy will build up over time and emit...

second one... the table of SI has x^2... but in this case it is the "x" = x-1

i like guys with deinfed jaw lines.. ok my specs : height 1.6 M: waist: 102 mass: 117.3 shoe size: 7

intentisty is the number of photons/unit time/unit area.... if a photon is needed for one electron to be emmitted then that means at the same intensity, the same number of photons/ unit area/unit time are equal hence the the number of electrons /unit time are going to be equal

how do we pay? over skype aswell/?

freaking silly me.. i love you!.

bump

ok here is the question... \int_{\frac{\pi}{6}}^{\frac{\pi}{2}}\frac{cos^3x}{sin^2x}.dx_ \int_{\frac{\pi}{6}}^{\frac{\pi}{2}}cosx. cot^2x.dx \int_{\frac{\pi}{6}}^{\frac{\pi}{2}}cosx.(sec^2x-1) .dx \int_{\frac{\pi}{6}}^{\frac{\pi}{2}}(secx-cosx) .dx [ln(secx+tanx)-sinx]_{\pi/6}^{\pi/2} how how...

hi, i am in year 4... i do'nt know how to e-mail you... or even have a log in to bored of studies.. advertise in the paper or something... this isn't going to reach the parents of primary school kids.

damn, i was aiming for a 99er

school estimated 96

the pipette can;'t control how many bubbles are present or even the volume of the bubble in the pipe. it does however, take into account that little bit that is stuck inside of it. also, wiping down the pipette from any extra acid/ base that is on the outside due to you dipping it in the...

anyone?

Heyy world.; what ATAR do u think ill get here are my rankings.. and report marks chem: 5/75(A) physics: 9/99(A) 4U maths: 6/83(A) 3U :15/113(A) english: 67/130(B) school rank is near 24th thanks!:music: