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Careful measurement of the electric field at the surface of a black box inidicates
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Careful measurement of the electric field at the surface of a black box inidicates that the net outward flux through the surface of the box is `8.0xx10^(3) Nm^(2)//C` (a) what is the net charge inside the box ? (b) If the net outward flux through the surface of the box were zero, could you conclude that there were no charges inside the box ? Why or why not?
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