g An electron travels at a speed of 9.2 x 106 m/s in a magnetic field of 1.07 x 10-3 T. As result of the magnetic force the electron winds up going in a circle maintaining its speed. What is the radius in centimeters of the circular path the electron follows?

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.