Electric potential, voltage and capacitors

Use this for “An electron starts at rest and crosses a 100 V potential difference. How much energy does it gain, in eV and in joules, and how fast does it go?”

Use this for “A 470 μF capacitor is charged to 9 V. How much charge does it hold, and how much energy does it store?”

Use this for “Two 0.01 m² plates sit 1 mm apart in air. What is the capacitance, what charge does 12 V put on it, and how strong is the field?”