In the figure four particles are fixed along an x axis, separated by distances d = 3.80 cm. The charges are q1 = +4e, q2 = -e, q3 = + = +12e, with e = 1.60 × 1019 C. What is the value of the net electrostatic force on (a) particle 1 and (b) particle 2 due to the ot particles? d d d 1 2 3 4 (a) Number i 3.273E-25 Units N (b) Number Units

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