A flag bearer holds a 20 N flag at the end of a pole that has an angle of 20 degrees to the horizontal. What is the force from the flag along the direction of the pole?
A. 6.8 N
B. 18.8 N
C. 21.3 N
D. 58.5 N

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.