Question
The Coulomb's law proportionality constant (in air) is k = ____.
Answer
The Coulomb's law proportionality constant (in air) is k = 9.0 x 109 N • m2 / C2.
The units on k are such that when placed into the Coulomb's Law equation the units on charge (Coulombs) and the units on distance (meters) will be canceled, leaving a Newton as the unit of force
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