question archive A proton has an initial speed of 3
A proton has an initial speed of 3
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A proton has an initial speed of 3.9 
105 m/s.
(a) What potential difference is required to bring the proton to rest?
_________________ kV
(b) What potential difference is required to reduce the initial speed of the proton by a factor of 3?
_________________ kV
(c) What potential difference is required to reduce the initial kinetic energy of the proton by a factor of 3?
_______________________kV
