In Fig. 21-22, the particles have charges 91 = -92 = 281 nC and 93 = -94 = 138 nC, and distance a = 3.9 cm. (a) Find the net electrostatic force on particle 3: Fnet, 3 = < 0.114 -0.228 > N " (b) What is the vector sum of net electric forces acting on particle 1, 2, 3 and 4? + Fnet, 2 + Fnet,3 + Fnet, 4 > N Fnet, 1 = < (8 Fig. 21-22 a

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In Fig. 21-22, the particles have charges 9₁ = -92 = 281 nC and 93 = -94 = 138 nC, and distance a = 3.9 cm.
(a) Find the net electrostatic force on particle 3:
Fnet, 3 =< 0.114
-0.228
X > N
I
(b) What is the vector sum of net electric forces acting on particle 1, 2, 3 and 4?
Fnet, 1 + Fnet, 2 + Fnet,3 + Fnet,4 = <
> N
a
Fig. 21-22
a
X
Transcribed Image Text:In Fig. 21-22, the particles have charges 9₁ = -92 = 281 nC and 93 = -94 = 138 nC, and distance a = 3.9 cm. (a) Find the net electrostatic force on particle 3: Fnet, 3 =< 0.114 -0.228 X > N I (b) What is the vector sum of net electric forces acting on particle 1, 2, 3 and 4? Fnet, 1 + Fnet, 2 + Fnet,3 + Fnet,4 = < > N a Fig. 21-22 a X
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