Question

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Answer 1

《ANSWER》

⭐ELECTROSTATICS ⭐

Using formula for a projectile from a height

that is

D = u * underoot 2H / g

here

F = q E°

since , F = mg , then , g = 》 qE°/ m

for the height , we assume it as a free fall body , thus

V = underoot 2gH

so , H = V°^2/2g