posted by Jamaal .
Two fixed charges -4.0 C and -5.0 C, are separated a certain distance.
a) Is the net electric field at a location halfway between the two charges:
1) directed toward the -4.0 C charge
3) directed toward the -5.0 C charge
b) If the charges are separated by 20 cm, calculate the magnitude of the net electric field halfway between the two charges.