Which of the following is an effect of the electric force? A. Two negative charges are attracted to one
another.
B. Two north poles repel each other.
C. Two positive charges repel each other.
D. Two south poles are attracted to one another.

An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. part a how much work is required to bring an additional electron from infinity to the origin? express your answer with the appropriate units. part b if, instead of the second electron coming in from infinity, it is initially at x = + 20.00 m on the axis and is given an initial velocity of 100.0 m/s toward the origin, does it reach the origin? part c how close to the origin does it come?