Physics 2 Chapter 23 Problem 34 In the figure a small, nonconducting ball of mas

Question

Physics 2 Chapter 23 Problem 34 In the figure a small, nonconducting ball of mass m = 1.0 mg and charge q = 2.1 times 10^4 C (distributed uniformly through its volume) hangs from an insulating thread that makes an angle theta = 42 degree with a vertical uniformly charged nonconducting sheet (shown in cross section). Considering the gravitational force on the ball and a assuming the sheet extends far vertically and into and out of the page, calculate the surface charge density sigma of the sheet. Number Units the tolerance is +/-2%

Explanation / Answer

We just need to put values in the formula:

E = (3.93e-12/(2*8.85e-12))*[1 - (0.0328/sqrt(0.038^2 + 0.0214^2))] = 0.055 V/m

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