Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^?2cm , mounted coaxially within a cylindrical anode with a radius of 0.5580cm . The potential difference between the anode and cathode is 245V . An electron leaves the surface of the cathode with zero initial speed (v initial = 0). Find its speed (vfinal) when it strikes the anode.
Vfinal = _____________m/s