An electron in an oscilloscope tube is traveling horizontally with a speed of 4.4×10^6m/s . It passes through a 1.9cm long region with an electric field pointing upward with a magnitude of 1400N/C.
(a) What is the magnitude of the electron's velocity when it emerges from the electric field region?
(b) What is the direction/angle of the electron's velocity when it emerges from the electric field region?