The curves in Figure P17.83 describe the force between two charged objects as a function...

The curves in Figure P17.83 describe the force between two charged objects as a function of the distance r between the objects. Match the curves to the following pairs of objects. Here a positive value of F indicates a repulsive force. More than one answer may be correct.

(i) Two positive point charges

(ii) Two negative point charges

(iii) Two point charges, one positive and one negative

(iv) A point charge and an infinite charged plane

(v) A point charge and an infinite line of charge