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Physics 11th Grade

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A foam ball of a mass of 0.150 g carries a charge of -2.00 nC. The ball is in a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  • Physics 11th Grade -

    M g = E Q

    Solve for the field magnitude E. You will need the value of g, which I am sure you already know.

    The direction of the E-field is down, so that an upward force is applied to a negative charge.

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