Answer to Question #307766 in Electricity and Magnetism for Apple

Question #307766

Two charges lie on positive x-axis. Charge A (5.0 x 10-9 C) is 4.0 cm from the origin and Charge B is 6.0 cm from the origin. (-7.0 x 10-9 C). What is the total force exerted by these two charges on Charge C (8.0 x 10-9 C) located at the origin?


1
Expert's answer
2022-03-08T08:56:43-0500

The net force

F=FACFBC=kqAqCr12kqBqCr22F=F_{AC}-F_{BC}=k\frac{q_Aq_C}{r_1^2}-k\frac{q_Bq_C}{r_2^2}F=9109(510981090.042710981090.062)=8.5105NF=9*10^9\left(\frac{5*10^{-9}*8*10^{-9}}{0.04^2}-\frac{7*10^{-9}*8*10^{-9}}{0.06^2}\right)\\ =8.5*10^{-5}\:\rm N

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