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An object with a charge of -3.7 μC and a mass of 4.7×10−2 kg experiences an...

An object with a charge of -3.7 μC and a mass of 4.7×10−2 kg experiences an upward electric force, due to a uniform electric field, equal in magnitude to its weight

. Find the magnitude of the electric field.

If the electric charge on the object is doubled while its mass remains the same, find the direction and magnitude of its acceleration.

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