What would happen if an electron was added to an atom

Which best represents the law of conservation of mass ?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.