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[Post New]16 Mar 2007 01:46:41 IST
    Subject: Re:the challenger question !
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DON007 (1458)

Blazing goIITian

Olaaa!! Perrrfect answer. 264  [333 rates]
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hey ....look.........
 
    U= [ 0][ R]   Vdq..............1
  V= k q / r              ( k= 1/4)..........(2)
   q=  q0 / (4/3R3)*   4/3r3
 q=  q0r3/R3.............   (3)
PUTTING 3 IN 2
WE GET .........
V= q0r2/ (4R3)...........4
DIFFERENTIATING q wrt r
we get..............
dq=q0 3r2 / R3 dr..........5
 
PUT V AND dq IN (1)
we get............
 
 
 
       U=    [ 0][ R]  3qo2/ (4R6) * r4  dr
       U=        3q02/4R6  *  [ R5/5]
   U= 3qo2/ 20R...............
HOPE U UNDERSTAND IT
 Q=  q0.....................okkkkkkkk
thanku
BELIEVE IN URSELF.....BECAUSE I BELIEVE IN U..............
 this reply: 12 points  (with 2 Olaaa!! Perrrfect answer.   in 3 votes )   [?]
 
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