Use these numbers: Q2 = -500 nC. When the second particle is placed on the x-axis at x = 47.0 cm, it experiences a force of 1.20 N in the positive x-direction. When the second particle is moved to x = 54.0 cm on the x-axis, it experiences a force of 9.00 N in the negative x-direction. Determine the location of the mystery charge