Electric potential, V, and potential energy, U, are related through:

How does the electric field from a spherical distribution of charge vary with the distance from then centre of the charges, r? (Assuming r is larger than the radius of the charge distribution).

Consider two metal plates free to move placed initially near one another with the same excess charge on each plate. What will happen?

What happens to a neutral object when it is subjected to an electric field?

Based on the fit results you obtained a value for G in the activity:

Does your result agree with the value  

Remember to compare only after applying proper formatting to the uncertainty and the value. 

Enter your value for G here, do not bother typing in the

Note this should be the properly formatted value after considering the uncertainty in G as reported by the fit. 

Enter your value for the uncertainty in G, expressed as a number but do not bother typing in the

Note this should be the properly formatted value for uncertainty.

Based on your fit results for the intercept as noted already and for G, do your results agree with theory, i.e. the relationship ?

Based on the fit results you obtained a value for the intercept in the activity:

Does your result agree with the expected value for the intercept (0)?

Remember to compare only after applying proper formatting to the uncertainty and the value, also note that you should choose the tightest match possible (i.e. the fewest uncertainties required to obtain agreement-if there is agreement at all). 

Make sure to include the opening and closing brackets.