Question: An alpha particle (), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an electric

An alpha particle (), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an electric field. The particle then begins to move. Find the speed of the alpha particle after it has moved through a potential difference of 3.45103 VV .

The charge and the mass of an alpha particle are qq = 3.201019 CC and mm = 6.681027 kgkg , respectively.

Use conservation of energy (Ki+qVi=Kf+qVf)(Ki+qVi=Kf+qVf) to solve for the final kinetic energy. Then use this value to solve for the final velocity of the alpha particle.

What is the value of the change in potential energy, U=UfUiU=UfUi, of the alpha particle?

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