A 5.56 V battery is connected across two large parallel metal plates that are separated
A 5.56 V battery is connected across two large parallel metal plates that are separated by 4.57E-3 m of vacuum. A proton is released from rest at the positive plate. If the only force on the proton is the electric force exerted by the electric field of the plates, what is the kinetic energy of the proton as it reaches the negative plate (in Joule)