A proton is moving in vacuum along a straight path from A to B .It passes point A at the speed of 2000km/s.
a)Calculate in J and in eV the kinetic energy of the proton at A.
b)Calculate the value of the positive voltage U that should be applied between A and B so that the proton passes B at the speed of 10000km/s. Specify how this voltage should be applied.
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