Question: When an object of charge - 2 . 1 C and mass 4 . 4 g is placed in a region of uniform electric field,

When an object of charge -2.1C and mass 4.4 g is placed in a region of uniform electric field, it experiences an upward electrostatic force that balances its weight (so that the object remains suspended in the field). What is the magnitude and direction of the electric field?

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