4. Calculate the medial value (average) of density: overrightarrow (p)=(overrightarrow (A))/(kx(y)^2)=(4)/(1.00cdot x.14)=2.821

The medial value (average) of density is calculated by dividing the total density by the number of particles. In this case, the total density is represented by and the number of particles is represented by . By substituting the given values into the formula, we get: Therefore, the medial value (average) of density is 2.821.