What is the dependent variable for the following experiment? Kim notices that Brad's Bread does not mold after a week in an open bag. Walter's Wonderful White produces a layer of black "fur" in the same length of time in its
open bag
O Amount of time
Type of bread
Amount of mold
Open bag

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.