1.) Three charges are fixed to an xy coordinate system. A charge of +19C is on t

Question

1.) Three charges are fixed to an xy coordinate system. A charge of +19C is on the y axis at y = +3.5 m. A charge of -17C is at the origin. Lastly, a charge of +58C is on the x axis at x = +3.5 m. Determine (a) the magnitude and (b) direction of the net electrostatic force on the charge at x = +3.5 m. Specify the direction as a positive angle relative to the +x axis.

2.) The drawing shows two situations in which charges are placed on the x and y axes. They are all located at the same distance of 2.0 cm from the origin O. For each of the situations in the drawing, determine the magnitude of the net electric field at the origin.

Picture can be viewed in this problem.

http://www.chegg.com/homework-help/questions-and-answers/drawing-shows-situations-charges-placed-thex-y-axes-located-samedistance-219-cm-origin-o-f-q747980

Explanation / Answer

a) Fy = 9*10^9 * 19* { (-17/3.5*3.5) +(58*0.707/2*3.5*3.5)} = -2.08*10^11 N Fx = -9*10^9*19*(58*0.707/2*3.5*3.5) = -2.86*10^11 N magnitude = 3.536*10^11 N direction = 216 degrees with + x axis in anti clock wise direction b)for each of situationof diagram as shown in link 1st diagram Ex = 9*10^9*10^-4*5/4 = 11.25*10^5 Ey = 11.25*10^5 E1 = 7.95*10^5 magnitude 2nd Ex = 9*10^9*10^-4*5/4 = 11.25*10^5 Ey = 11.25*10^5 E1 = 7.95*10^5

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