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