Question

How much force is exerted between two charged objects that are separated by a distance of 1.5 meters if both objects have a charge of +3.0C?

Answer 1

Question 24862

The expression for Coulomb force is $|F| = \frac{k q_1 q_2}{R^2}$ , where $k = 8.988 \cdot 10^9 N m^2 C^{-2}$ , $R = 1.5m$ , $q = 3C$ . Plugging in these values into this formula, obtain:

$$| F | = \frac {8 . 9 8 8 \cdot 1 0 ^ {9} N m ^ {2} C ^ {- 2} 3 C \cdot 3 C}{(1 . 5) ^ {2} m ^ {2}} = 3. 6 \cdot 1 0 ^ {1 0} N.$$