POSSIBLE POINTS: A box weighing 600 N is pushed horizontally with a force of 200 N across a surface. The force of sliding friction is 50 N. What is the magnitude of the net
force on the box?
400
850 N
550N
150N

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative