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One kind of e-book display consists of millions of very small spheres that float in a thin fluid layer between two
The dipole moment of the spheres can be modeled as two opposite charges of magnitude 3.5 × 10–15 C, separated by a distance of 100μm. What is the maximum possible torque on a sphere if the electric field between the transparent plates is 4.0 × 105 N/C?
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