A positive point charge of 6.8 times10^-7 C at the point (x, y) = (-1.5/2 m, 0 m

Question

A positive point charge of 6.8 times10^-7 C at the point (x, y) = (-1.5/2 m, 0 m) is 1.5 m away from a negative point charge of 6.8 times10^-7 C at (x, y) = (-1.5/2 m, 0 m) on the x-axis Find the electric field (size and direction) at a point on the y-axis (x, y)=(0 m, 2.1 m) due to the two charges. 0.00 N/C, since the fields cancel 2318.13 N/C, along the y-axis 827.90 N/C, parallel to the x-axis 2461.54 N/C, parallel to the x-axis 2461.54 N/C, along the y-axis Your are given two concentric spherical metal shells, the smaller shell has a radius of 0.28 m and a surface charge of 1.1 times 10^-8 C and the larger shell has a radius of 0.73 m and a surface charge of -3.3 times10^-8 on it. Find the electric field at a point 0.49 m from the center of the spheres. 55732784148.85 N/C 412.33 N/C 1262.76 N/C 1649.31 N/C -824.66 N/C

Explanation / Answer

a) E = 2k(Q)0.75/(2.1^2 + 0.75^2)^3/2 = 826.065 N Towards x axis
b) E = Qin/4*pi*epsilon*r^2 = k*Qin/r^2 = 411.4117N/C

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