Physics

Problem

Two short electric dipoles with dipole moments

p_{1}

and

p_{2}

are placed on the

x

-axis.

p_{1}

is at the origin and points in the

+x

direction.

p_{2}

is at position

x = r

and points in the

-x

direction (opposite to

p_{1}

). Find the magnitude of the electrostatic force exerted by dipole

p_{1}

on dipole

p_{2}