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Consider a thin spherical shell of radius 14.5 cm with a total charge of +38.9 microCloumbs distributed uniformly on its surface. (Take radially outward as the positive direction.)

So I need to find the field at 35.6cm from the center of the charge distribution.

Since this r is bigger than the shell R

E= k_e * Q/ r^2 ; right?

E = 8.99*10^9 * (38.9 * 10^-6)/(0.356)^2; right?

I get 2759365.9260194. My answer is MN/C so I put 2.76

No dice. Did I miss something?

I also tried 0.276, 27.6, 276, 2760, 27600, 276000, and 2760000 to be sure that the program wasn't just disregarding which units it wanted.