_Try these Problems to see how things are going. Input your answer in the answer blocks. If they are numerical, round to two decimal places. Don't worry, it is not for a grade, it just lets me know students' progress.
_What is the force between two protons that are separated by 1.3 cm?
_How far apart are an electron and two protons if the force between them is 5 N?
_If two charges, 2q and 3q, are separated by 1.5 m, and experience a force of .3 N, what value is q?