Two charged objects, a and b, exert an electric force on each other. what happens if the distance between them is increased?

a) the charge on b decreases
b) the charge on b increases
c) the electric force between them decreases
d) the electric force between them increses

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

Which of the following statement is false

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?