Three point charges are arranged in a horizontal line as shown below. Find the e

Question

Three point charges are arranged in a horizontal line as shown below. Find the electric force an Q1 given the following: Qs- 4 mc, Q2-1 mc, -3 mc, r3 -70 m, and r2-140 m. Remember that a positwe force points to the right and a negative force points to the left. Q1 Q2 Q3 What is the net force on charge Q1? in urits of N) Submit Answer Tries 0/3 What is the net force on charge Q2? in units of N) Submit Answer Tries o/3 What is the net force on charge Q3? in units of N) Submit Answer Tries o/3 What is the sum of the forces on all three charges? in uits erN) Submit Answer Tries 0/3

Explanation / Answer

Net force on q1

F1= k q1*(q2/r2^2+ q3/r3^2)

= 9*10^9* 4*10^-6*(1/70^2 - 3/(140+70)^2)

= 4.898 N

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F2= 9*10^9*10^-6*( - 4/70^2 + 3/140^2)

= -5.97 N

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F3= 9*10^9* 3*10^-6*(4/210^2 - 1/140^2)

= 1.07 N

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Net force,

F= 4.898-5.97+1.07

F= -2*10^-3 N

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Comment in case any doubt.. good luck

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