here as Cp is given as a function of temperature we shud use integration...

del H (at temp T)=delH(std)+..............................here boxt=dt

nw just int u will get d answer

a^(13)=1

thus use

1+a^2+a^3.........+a^12=0

sum of roots is zero..............(rem we use it in complex nos ......complex cube root of unity ........ ??)

simplify d multiplication part and use d bove property

friction is nt eqaul 2 zero in pure rollin wheras friction is necessary for pure rollin ....or else it wud b slidin .......

correct me fif i m wrng

is it integrable .......??

here's me .......................

neone plez help

find d electric field due to a long infinitely long non conductin plane havin unform charge density as shwn in figure at all points in space for fig 1,2,3

a ball of radius R carries a positive charge whose volume density depends only on d sepration r frm d ball's center as rho=(rho)o[1-r/R]..................here (rho)o is rho knot

whre rho)o is constnt assumin d primitives o f d ball and d envionmnt to b equa;l to unity

find

a) d magnitude of elctric field sternght as a function of distance r  both inside and ouutside d ball

b) the max intensity E(max) and corresponidn distance r (max)

plez help soon ......

help neone plez yaar.........

yeah me 2 love it itz superb !!

here's a nice one for sumone

Kahin to.. kahin to

Hogi wo,

Duniya jahan tu mere saath hai..

Jahan mein, jahan tu,

Aur jahan, bass tere mere jazbaat hai,

Hogi jahan subah teri,

Palko ki, kirano mein,

Lori jahan chand ki,

Sune teri baahoin mein..

(Jaane naa kahan wo duniya hai,

Jaane naa wo hai bhi ya nahi,

Jahan meri zindagi mujhse,

Itni khafa nahi..) - 2

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Mein kho gayi hu jaane kiski baahon mein,

Manzilon se raahein doodhti chali,

Kho gayi hai manzil kahin rahon mein..

Kahin to, kahin to,

Hai nasha..

Teri meri har mulaqaat mein,

Hoton se, hoton ko,

Chumti, o rehte hai hum har baat pe,

Kehti hai fiza jahan,

Teri zamin aasmaan..

Jahan hai tu, meri hassi,

Meri khushi, meri jaan…

(Jaane naa kahan wo duniya hai,

Jaane naa wo hai bhi ya nahi,

Jahan meri zindagi mujhse,

Itni khafa nahi..) - 3

c u get

logy-log(1-y)=x+c .....wen u do diff equations

here i m gettin confused yaar c y(0)is given as 2 it helps us 2 find c

help at this one step uskebaad aata hai help

d iff sum in wich u get success in solvin it is knw as successive diff .................

(kiddin)

 c rite it as y=(tanx )^y

nw u can diff it easily

dy/dx=tanx^(y)*[ylog tanx]

dy/dx=tanx^(y)*(dy/dxlog tanx+ysec^2x/tanx)

thus u get dy/dx=2