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in radioactive decay, does the process of decay start instantaneously? ie will its no. of nuclei continuously decline with time?

thanks dude......got it...........

no one???..........try!!!...........

d ans is right tanmay
also ans is 3a^2/2
plz giv detailed soln

if S1,S2,S3 denote the sums of n terms of three A.P.'s whose first terms are unity and common differences in H.P.,prove that-

n=(2S3S1-S1S2-S2S3)/(S1-2S2-S3)

sum1 plz..........

i c..............well, then u may b right.........but im not yet fully convinced............

Estimate the pH of a son obtained by mixing 5g of acetic aid and 7.5g of sodium acetate per 500dm3 of the soln. (pKa of acetic acid is 4.7447)

ABC is an equilateral triangle whose centroid is G. GA=GB=GC=a. let l be a line thru G. Let L,M,N be the feet of perpendicular on l from A,B,C respectively.

Then AL2+BM2+CN2 must be_____???

smoke is not light dude........that aint correct.........maybe sum other reason..........

ne1 else plz.....try solvin it.............

right........plz giv detailed soln
ill rate u

the bullet will not hit d monkey................dats d ans dude..........

but how can v get w2 in the ans??

but d ans is no...............????