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24 February, 02:01

A + 3.00); C charge with a mass of 4.00 x 10-3 kg hovers above a horizontal flat insulating surface, neither descending nor ascending, and thus in mechanical equilibrium. Taking g = 9.8 m/s2, what is the magnitude of the electric force on the charge? Hint: keep in mind that the weight force is given by F mg? A. 0.0281 N O B. 0.0392 N C. 0.0473 N 0 D. 0.0671 N

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  1. 24 February, 04:54
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    option (B)

    Explanation:

    q = 3 c, m = 4 x 10^-3 kg, g 9.8 m/s^2,

    In the equilibrium condition, the weight of the charge particle is balanced by the electrostatic force.

    q E = mg

    Electrostatic force = m g = 4 x 10^-3 x 9.8 = 0.0392 N
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