23.54 A particle with charge -3.00 NC is at the origin, and a particle with the negative charge of magnitude Q is at x = 50.0 cm. The third particle with a positive charge is in equilibrium at x = 20.9 cm. What is Q? A particle with charge -2.97 nC is at the origin, and a particle with a negative charge of magnitude Q is at x = 46.5 cm. The third particle with a positive charge is in equilibrium at x = 22.4 cm. What is Q? (In nC)