What are the strength and direction of the electric field at the position indica

Question

What are the strength and direction of the electric field at the position indicated by the dot in the figure(Figure 1) ?

Figure 1 T of 1 2.0 cm 5.0 nC 10 nC 4.0 cm 5.0 nC Part A Give your answer in component form. (Assume that z axis is horisontal and points to the righ and y-axis points upward.) Express your answer in terms of the unit vectors i and j. Express your answer using two significant figures. N/C My Answers Give Up Submit Part B Give your answer as a magnitude and angle measured cw from the positive z-axis. Express your answer using two significant figures. N/C Part C Express your answer using two significant figures. CW from the +a-axis

Explanation / Answer

A)Electric field = -(9*10^9*10*10^-9/0.04^2)i-(9*10^9*5*10^-9/0.02^2)j

-(9*10^9*10*10^-9*2/0.002*sqrt(5))i+(9*10^9*10*10^-9/0.002*sqrt(5))j

= -56250i-112500j-40249.2236i+20124.6118j = -96499.2236i-92375.3882j

B) Magnitude = 133586.3485 N/C

C) Direction = 90+Tan-1(96499.2236/92375.3882)

= 136.2508 Degrees measured from +ve x-axis.

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