Two equal charges are separated by 3.7 x 10^-10 m. the force between the charges has a magnitude of 2.37 x 10^-3 n. what is the magnitude of q on the charges?

What determines the amount of inertia an object has

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Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)