All of your observations in the Small Worlds Sim have assumed you were viewing the solar system from the Sun. Now we provide Earth as a reference point for your observations. Earth is a distance of 1 AU away from the Sun and is an easy number to work with. Take a look at the Small Worlds Sim again. Observe the objects you have identified closely. How fast are they moving compared to Earth

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.