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What potential difference is needed to accelerate a he+ ion (charge +e, mass 4u) from rest to a speed of 1.8×106 m/s ?

Respuesta :

q = +e = 1.6 x 10^-19 C 
m = 4u = 4 x 1.66 x 10^-27 kg 
vi = 0 
vf = 1.7 x 10^6 m/s 

Let potential difference = V 
q V = (1/2)*m*(vf^2 - vi^2) 
Can you substitute values and calculate V? 

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