How do you best determine whether j/m^2 and m*s^2/n are equivalent units?
a. compare the written form of the units to see if they look the same.
b. determine if the formulas that each unit came from are the same.
c. notice that one unit contains joules and the other newtons.
d. express them both in terms of si base units.

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