Two events occur in an inertial system K as follows:E1 at {x1=a, t1=2a/c, y1=z1=0} and E2 at {x2=2a, t2=3a/2c, y2=z2=0}.In what frame K' will these events appear to occur at the same time? Describe the motion of the frame K'

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c