Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially atx1 = 12.2 mm. In this configuration, q1 exerts a repulsive force of 2.62 µN on q2. Particle q2 is then moved to x2 = 18.4 mm. What is the force (magnitude and direction) that q2 exerts on q1 at this new location? (Give the magnitude in µN.)