Respuesta :

Given:

The negative charge q1 = 0.3 C

The positive charge q2 = 0.5 C

The distance between the charges is 0.4 m

To find the magnitude of the force between them.

Explanation:

The formula to calculate the magnitude of the force is

[tex]F=\frac{kq1q2}{r^2}[/tex]

Here, k is Coulomb's constant whose value is

[tex]k=\text{ 9}\times10^9Nm^2C^{-2}[/tex]

On substituting the values, the magnitude of force will be

[tex]\begin{gathered} F=\frac{9\times10^9\times0.3\times0.5}{(0.4)^2} \\ =8.4375\text{ }\times10^9\text{ N} \end{gathered}[/tex]

Final Answer: The magnitude of the force is 8.4375 x 10^(9) N.