Can anyone help with the following 2 questions over electrical energy and capacitance? 1) To recharge a 12-V battery, a battery charger must move 3.6x10^5C of charge from the neg. to pos. terminal. How much work is done by the charger in joules? 2) Calculate the speed of a proton that is accelerated from rest through a potential difference of 120V. What is the speed of an e-? I know this is fairly simple to some, but I'm having major trouble! Any help (or strategy) would be appreciated.