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rreedde
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Homework Statement
An alpha particle 4 2 He 2+ approaches a stationary gold nucleus 197 79 Au at a speed of 7.0 X 10^6 ms-1.
By considering only electrostatic repulsion, calculate the closest possible distance of apporach between the alpha particle and gold nucleus.
Homework Equations
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The Attempt at a Solution
Charge of Helium particle = 2e
Charge of gold nucleus = 79 e
And I am just stuck here, how do i use the value of the speed of the particle in my working?