The charges and coordinates of two charged particles held fixed in an xy plane are 91 = 3.49 µC, x1 = 4.89 cm, y1 = 0.662 cm and q2 = -4.75 µC, x2 = -2.39 cm, y2 = 1.53 cm. Find the (a) magnitude and (b) direction (with respect to +x-axis in the range (-180°;180°)) of the electrostatic force on particle 2 due to particle 1. At what (c) x and (d) y coordinates should a third particle of charge q3 = 4.71 µC be placed such that the net electrostatic force on particle 2 due to particles 1 and 3 is zero? (a) Number 28.45 Units N (b) Number -6.88 Units * (degrees) (c) Number -0.107 Units m (d) Number 0.025 Units m

The charges and coordinates of two charged particles held fixed in an xy plane are 91 = 3.49 µC, x1 = 4.89 cm, y1 = 0.662 cm and q2 = -4.75 µC, x2 = -2.39 cm, y2 = 1.53 cm. Find the (a) magnitude and (b) direction (with respect to +x-axis in the range (-180°;180°)) of the electrostatic force on particle 2 due to particle 1. At what (c) x and (d) y coordinates should a third particle of charge q3 = 4.71 µC be placed such that the net electrostatic force on particle 2 due to particles 1 and 3 is zero? (a) Number 28.45 Units N (b) Number -6.88 Units * (degrees) (c) Number -0.107 Units m (d) Number 0.025 Units m