At equilibrium, the relation between dihedral angle and surface energy is represented by the equation ______

cos ( frac{ theta}{2}=- frac{ gamma_{ss}}{ gamma_{sv}} )

cos ( frac{ theta}{2}=- frac{ gamma_{sv}}{ gamma_{ss}} )

cos ( frac{ theta}{2}= frac{ gamma_{sv}}{ gamma_{ss}} )

cos ( frac{ theta}{2}= frac{ gamma_{ss}}{ gamma_{sv}} )

cos ( frac{ theta}{2}=- frac{ gamma_{ss}}{ gamma_{sv}} )

At equilibrium, the relation between dihedral angle and surface energy

1.	At equilibrium, the relation between dihedral angle and surface energy is represented by the equation ______
A.	cos ( frac{ theta}{2}=- frac{ gamma_{sv}}{ gamma_{ss}} )
B.	cos ( frac{ theta}{2}= frac{ gamma_{sv}}{ gamma_{ss}} )
C.	cos ( frac{ theta}{2}= frac{ gamma_{ss}}{ gamma_{sv}} )
D.	cos ( frac{ theta}{2}=- frac{ gamma_{ss}}{ gamma_{sv}} )
Answer» D. cos ( frac{ theta}{2}=- frac{ gamma_{ss}}{ gamma_{sv}} )