Posted by **Kg** on Sunday, September 30, 2012 at 9:20pm.

A bare helium nucleus has two positive charges and a mass of 6.64 10-27 kg.

(a) Calculate its kinetic energy in joules at 2.00% of the speed of light.

J

(b) What is this in electron volts?

eV

(c) What voltage would be needed to obtain this energy?

V

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