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A very small object with mass 8.10×10−9 kg and positive charge 6.20×10−9 C is projected directly...

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Physics

A very small object with mass 8.10×10−9 kg and positive charge6.20×10−9 C is projected directly toward a very large insulatingsheet of positive charge that has uniform surface charge density5.90×10−8C/m2. The object is initially 0.590 m from the sheet.

What initial speed must the object have in order for its closestdistance of approach to the sheet to be 0.330 m ?

An electron is released from rest at a distance of 0.530 m froma large insulating sheet of charge that has uniform surface chargedensity 3.30×10−12C/m2 .

What is the speed of the electron when it is2.00×10−2 m from the sheet?

Answer & Explanation Solved by verified expert
4.3 Ratings (739 Votes)
The field from an effectively infinite sheet of charge is E 2 The force on the particle is FqE acting away from the sheet F qE q2 If v is the initial velocity the initial    See Answer
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