The speed of an alpha particle is determined to be3.45×10 6 m/s. If all of its k

Question

The speed of an alpha particle is determined to be3.45×106 m/s. If all of its kinetic energy isacquired by passing through an electric potential, what is themagnitude of that potential? What equation should I use to find this answer? I'm completelylost on how to start. Any help would be wonderful! The speed of an alpha particle is determined to be3.45×106 m/s. If all of its kinetic energy isacquired by passing through an electric potential, what is themagnitude of that potential? What equation should I use to find this answer? I'm completelylost on how to start. Any help would be wonderful!

Explanation / Answer

The kinetic energy of the particle is actually caused by the workof the electric force. The work of the electric force is equal to the potentialdifference. Let the potential difference is W mv^2/2=W W=q*V with V is the potential. So V=mv^2/(2q)=1,24e5(V)

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