rina me ner esecrC TOrce me wo cnarges woua exert on an electron placea at point

Question

rina me ner esecrC TOrce me wo cnarges woua exert on an electron placea at point on tne x-aXIS at = 1.2u m. Express your answer with the appropriate units. Enter positive value if the force is in the positive z-direction and negative value if the force is in the negative r-direction. Constants A-4.00 nCpoint charge is at the origin, and a second 6.50 nC point charge is on the z-axis at x = 0.800 m. F-6.24x1017N Correct Part F Find the net electric force that the two charges would exert on an electron placed at point on the z-axis at-0.200 m Express your answer with the appropriate units. Enter positive value if the force is in the positive z-direction and negative value if the force is in the negative c-direction. - 9.36-10-18N Submit Previous Answers Request Answer XIncorrect; Try Again; 4 attempts remaining Provide Feedback Next >

Explanation / Answer

q1 = -4 *10^-9 C

q2 = -6.5 *10^-9 C

q3( electron) = -1.6 *10^-19 C

q1 exerts a force of repulsion on q3 directed along -x axis

F1x = -k*q1*q3/r13^2 = -9*10^9*4*10^-9*1.6*10^-19/(-0.2-0)^2 = -1.44*10^-16 N

q2 exerts a force of repulsion on q3 directed along -x axis

F2x = -k*q2*q3/r23^2 = -9*10^9*6.5*10^-9*1.6*10^-19/(-0.2-0.8)^2 = -9.36*10^-18 N

Fx = F1x + F2x = 1.53*10^-16 N

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