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Solve the all parts of given question:
Question: An electron is to be accelerated from a velocity of 3.00×106 m/s to a velocity of 9.00 × 106 m/s.
Part A: Through what potential difference must the electron pass to accomplish this?
Part B: Through what potential difference must the electron pass if it is to be slowed from 9.00 × 106 m/s to a halt?
Please help, completely confused!! Give steps if possible for above question.
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