What is the change in potential energy if the distance separating the electron and proton is increased to 1.0 nm?

Explanation:

The change in potential energy can be expressed as:

where K is a constant with a value of , q1 and q2 are the charges of the proton and the electron and r is the distance between them.

The charge for the proton is and the charge for the electron is .

Converting r=1.0nm to m:

Replacing values:

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate