For the vectors in the figure, with a = 12, b = 9.0, and c = 15 what are (a) the magnitude and (b) the direction of a* b, (c) the magnitude and (d) the direction of a * c , and (e) the magnitude and (f) the direction b * c?

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above