The Three Point Charges +4

question 25

Multiple Choice

The three point charges +4.0 μC,-5.0 μC,and -9.0 μC are placed on the x-axis at the points x = 0 cm,x = 40 cm,and x = 120 cm,respectively.What is the x component of the electrostatic force on the -9.0 μC charge due to the other two charges? (k = 1/4πε₀ = 9.0 × 10⁹ N ∙ m²/C²)

• A)-0.55 N
• B)0.55 N
• C)0.64 N
• D)0.41 N
• E)-0.41 N

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