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Particle 1 (with a charge of +5.0 µC) and particle 2 (with a charge of +3.0 µC) are fixed in place with separation d = 4.0 cm on the x axis shown in Fig. 24-58a. Particle 3 can be moved along the x axis to the right of particle 2. Figure 24-58b gives the electric potential energy U of the three-particle system as a function of the x coordinate of particle 3. The scale of the vertical axis is set by Us = 5.0 J. What is the charge of particle 3?
Figure 24-58 Problem 56.
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