Question

The potential energy between two toms(in a molecule) is given by..
U(x)=a/x^12-b/x^6..
where a & b=+ve and x=distance b/w 2 atoms..The molecule is in stable equilibrium when x=?

Answer 1

\[\LARGE (ax^{-12} -bx^{-6})\]
2nd derivative=minimum
\[\LARGE \frac{156}{x^{14}}-\frac{42b}{x^8}<0\]
if im going right

Answer 2

2nd derivative=negative*

Answer 3

whats the need?

body will be in eqbm when net force on it = 0

Answer 4

F= -dU/dx

Answer 5

yes

Answer 6

So just make the substituion.

Answer 7

Diff U?

Answer 8

once?

Answer 9

no, diff yourself! >.<

Answer 10

yes once

Answer 11

\[\LARGE -12ax^{-13}+6bx^{-7}\]

Answer 12

=F

Answer 13

=-F

Answer 14

it doesn;t matter, just put that =0

Answer 15

0?

Answer 16

net force =0

Answer 17

that is neutral eqm?

Answer 18

net force=-ve is stable eqm

Answer 19

hein ?

Answer 20

just put that 0, >.<

Answer 21

\[\LARGE x=\sqrt[7]{\frac{2a}{b}} \]
nice

Answer 22

6*

Answer 23

:)

Answer 24

now lets dance? :)

Answer 25

but why 0

Answer 26

celebration time!

Answer 27

I can sing also, I know tinku jiya song :)

Answer 28

.-.

Answer 29

pal pal na maane.. ??

Answer 30

go back where you came from right now :P

Answer 31

my space ship left me! :(
I am right now staying with rohit.

Answer 32

please complete the song, pal pal na maane.. ?

Answer 33

\[\LARGE \rho hit ?\]

Answer 34

phuck ?

Answer 35

D:

Answer 36

pal pal na maane??? >.<

Answer 37

?

Answer 38

lolwut

Answer 39

gtfo.ur job is done :D

Answer 40

http://meme.andreavenditti.com/okay.png