Three particles are fixed in place and have charges q1 = 15 C, q2 = -1.6 C, and q3 = -7.2 C. Distance a = 6.00 m. Calculate the net Electrostatic force (Magnitude and Direction) if each of the following particles was placed at point P. 1. An electron 2. A Proton 3. A particle with charge -1.2 C

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