PHY 131s17, Homework 2: msuprob04 problem Three charges are arranged on a line a
ID: 1523056 • Letter: P
Question
PHY 131s17, Homework 2: msuprob04 problem Three charges are arranged on a line as shown above. False: If Q1 is positive, Q is negative and Q3 is negative, then MUST feel a net force to the right. False: If Q1 is positive,Q2 isnegative and Q3 is positive, then Q2 MUST feel a net force to the right. True: If Q1 is positive,Q2 is negative and Q3 is positive, then Q2 MIGHT feel a net force to the right. True: If Q1 is negative, Q2 is negative and Q3 is positive, then MUST feel a net force to the right. ial computers answer now shown above. Previous Tries Your receipt no. is 163 3706f In the above figure, R 170 m Q1 190-106 C.Qn -Q1 and Q3-Q1.Caloulate the total force on Q2. Give your answer with a positive number for a force directed to the Use Coulomb's Law and superposition of electric forces.Explanation / Answer
subprob04
Net force on Q2 is given as
F = Force by Q1 + Force by Q3 = F1 (towards left) + F3 (towards left)
F = k Q1Q2/R2 + k Q2Q3/R2
F = (9 x 109) (1.9 x 10-6)2 /(1.70)2 + (9 x 109) (1.9 x 10-6)2 /(1.70)2 = 0.0225 N
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