When r >>a, use a Taylor series expansion to show that the electric potential can be approximated by the expression V(r, θ)= Kp. r/r^2 where p is the electric dipole moment and r is the radial unit vector in polar coordinates.

When a game allows you to pick party members from a large pool, each with different classes and roles but in which no single party combination is clearly superior to others, the game is using: intransitive relationships transitive relationships orthogonal relationships parallel relationships