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July 2, 2015

Homework Help: Physics

Posted by Anonymous on Monday, January 30, 2012 at 9:22pm.

A charged particle of mass 6.38x10^-31kg is suspended motionless in the air by an electric field. If the electric field is 7.52x10^-21 N/C downwards, what is the magnitude and sign of the charge of
the particle?

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