Final answer:
To find the net electric force between two charges on an electron at a specific point, we need to determine the electric forces due to each charge and add them together using Coulomb's law.
Step-by-step explanation:
To find the net electric force that the two charges would exert on an electron on the x-axis at x = 1.20 m, we need to determine the electric forces due to each charge separately and then add them together. The electric force between two charges is given by Coulomb's law:
F = k · (q1 · q2) / r^2
Where F is the electric force, k is the electrostatic constant (8.99 x 10^9 Nm^2/C^2), q1 and q2 are the magnitudes of the charges, and r is the distance between them.
Once we have calculated the electric forces due to each charge, we can add them together to find the net electric force. If you provide the magnitudes and distances of the charges, I can assist you further with the calculation.