Two oppositely charged particles, q, and 92, are fixed on the x-axis. Point P is a small distance above the x-axis and midway between the charges. A proton at point P experiences a net force directed up and to the right, as shown in Figure 1. (7.3) K/U TA point P 41 42 X Figure 1 (a) Which particle is positively charged, and which is negatively charged? (b) Which particle has the greater magnitude of charge? Or, do they have the same magnitude of charge? Justify your