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Electric and gravitational force

An alpha particle (the nucleus of a helium atom) has a mass of 6.64x10-27kg and a charge of +2e. What are the (a)magnitude and (b)direction of the electric field that will balance the gravitational force on the particle?

I need to know the step by step setup and answer for this problem given the above information. thank you

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Hello and thank you for posting your question to Brainmass.

The gravitational force on the particle is simply its weight Mg:

W = Mg

The electric force on charge q due to the electric field E is:

F=qE

For balance these two ...

Solution Summary

The solution explains how to find teh electric field from force balance considerations.

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