A proton has an initial speed of 49 x 105 msa what, Ask an Expert

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A proton has an initial speed of 4.9 x 10⁵m/s.

(a) What potential difference is required to bring the proton to rest?

(b) What potential difference is required to reduce the initial speed of the proton by a factor of 4?

(c) What potential difference is required to reduce the initial kinetic energy of the proton by a factor of 4?

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