1. The problem statement, all variables and given/known data a cathode ray tube contains parallel plates that are 30mm long and have an electric field strenght between them of 2.5x10^4. an electron travelling at 2.9x10^7m/s enters the field at right angles. explain why the electron experiences a change in velocity. 2. Relevant equations 3. The attempt at a solution im thinking that only the direction of the electron changes but the speed stays the same. so the velocity changes in terms of direction. is that right?