Answer Happy

= 17 The charges and coordinates of two charged particles held fixed in an xy plane are q₁ +3.0 μC, χι = 3.5 cm, y₁ = 0.50 cm, and 92 = -4.0 μC, x₂ = -2.0 cm, y₂ = 1.5 cm. Find the (a) magnitude and (b) direction of the electrostatic force on particle 2 due to particle 1. At what (c) x and (d) y coordi- nates should a third particle of charge q3 = +4.0 μC be placed such that the net electrostatic force on particle 2 due to parti- cles 1 and 3 is zero? GO
39 In Fig. 21-38, particle 1 of charge +4e is above a floor by distance d₁2.00 mm and par- ticle 2 of charge +6e is on the floor, at distance d₂ = 6.00 mm horizontally from particle 1. What is the x component of the electrostatic force on particle 2 due to particle 1? SSM d₁ d₂- 24 FIG. 21-38 Problem 39.
57 What is the total charge in coulombs of 75.0 kg of electrons? 58 In Fig. 21-43, six charged particles surround particle 7 at radial distances of either d = 1.0 cm or 2d, as drawn. The charges are q₁ = +2e, q2 = +4e, q3= +e, 92 94 +4e, gs = +2e, q6 = +8e, 97 = +6e, with e = 1.60 x 10-19 C. What is the magnitude of the net electrostatic force on particle 7? 7 3 4 6 FIG. 21-43 Problem 58. x