1.

Find the force between 2C and -1C separated by a distance 1m in air(in newton).

A. 18 X 10<sup>6</sup>
B. -18 X 10<sup>6</sup>
C. 18 X 10<sup>-6</sup>
D. -18 X 10<sup>-6</sup>
Answer» C. 18 X 10<sup>-6</sup>


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