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1)Determine what the potential difference must be so that when a load of 3 mC is...

1)Determine what the potential difference must be so that when a load of 3 mC is moved, a work of 10 J must be done.
2)If we place a proton in a 50 N / C uniform electric field. Determine what acceleration you are going to experiment.
3)An electron is placed in a certain uniform electric field of unknown value. The electron was at rest at the time of being placed in the field. In a time of 3 seconds I reach 3% of the speed of light. Determine the magnitude of the field.
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