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What electric field directed downward

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Reference no: EM131782855

1) An electron and a positron each have a mass of 9.11 x 10^-31 kg. What electric field directed downward will exactly balance the weight of electron

A) 4.1 X 10-13 N/C

B 8.2 X 10-12 N/C

C) 1.02 X 10-7N/C

2) a proton initially at rest is accelerated through an electric potential difference of 1800V. What is the speed of the proton

Please show the work really quick. I need the answer quicker

Reference no: EM131782855

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