(A)Three charges, Q1, Q2, and Q3 are located in a straight line. The position of

Question

(A)Three charges, Q1, Q2, and Q3 are located in a straight line. The position of Q2 is 0.301 m to the right of Q1. Q3 is located 0.180 m to the right of Q2. The force on Q2 due to its interaction with Q3 is directed to the.....
(True/False)Left if the two charges are negative.
(True/False)Right if the two charges are negative.
(True/False)Left if the two charges have opposite signs.
(True/False)Left if the two charges are positive.
(True/False)Right if the two charges have opposite signs.

        
(B)In the above problem, Q1= 1.73

Explanation / Answer

A 1) True

2) False

3) false

4) True

5) true

B) F1= k*Q1*Q2/r1^2= 9*10^9*1.73*10^-6*3.22*10^-6/(0.301^2) = 0.5533 N towards Q1

F2 = k*Q2*Q3/r2^2 = (9*10^9*3.03*10^-6*3.22*10^-6)/(0.180^2) = 2.7101 N toward Q3

F net = F2-F1 = 2.15 N

C) F1 = k*Q1*Q3/r^2..... F2 = k*Q2*Q3/(r+0.301)^2.

F1 =F2 ...............=>r = 0.301/(sqrtq2/Q1)-1)= -0.8262 m

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