A solid has a shear modulus $30$ GPa and Poisson's ratio of $0\mathrm{.}30.$ Consider $2$ parallel edge dislocations, A and B $($tangent and Burger's vectors of the dislocations are equal in magnitude and direction$)$ lying on the same slip plane in this solid a distance apart, r$=100$nm$.$ The magnitude of the burger's vectors of the dislocations is $0\mathrm{.}2$ nm $.$

Determine the magnitude and direction of the force per unit length in units of N $/$ m that dislocation A exerts on dislocation B $.$

Answer formatted as magnitude N$/$m : direction.

$1\mathrm{.}4$E$-3+$i

$1\mathrm{.}4$E$-3-$i

$2\mathrm{.}7$E$-3+$i

$2\mathrm{.}7$E$-3-$i