28. unbalanced forces cause an object to a) all of the answers are correct
b) move with constant velocity
c) speed up, slow down
d) be at rest

Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)