Physics

Problem

141.Two negative point charges are a distance

x

apart and have potential energy

U

. If the distance between the point charges increases to

3 x

, what is their new potential energy? (A)

9 U

(B)

3 U

(C)

1 / 3 U

(D)

1 / 9 U

(A)

9 U

(B)

3 U

(C)

1 / 3 U

(D)

1 / 9 U