Question

A positive charge of magnitude 3.0 x 10-8 C and a negative charge of magnitude 4.0 x 10-8C are separated by a distance of 0.02 m. Calculate the Coulomb force between the two charges.
F = k q1 q2/r^2
so plug in your numbers
I got 270,000 when I calculated 9*3*4/ 0.02^2, So would this be 2.7 x 10^-7?
I keep getting this wrong for my homework, please help me. My teacher wants this in (# x 10^#).

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