Question

Two equal point charges Q are separated by a distance $d$. a) How much energy is required to assemble (put together) this system? b) What is the potential in the middle between the two charges? c) One of the charges is released and moves away from the other due only to the electrical force between them. When the moving charge is a distance $3d$ from the other charge, what is its kinetic energy? The figure shows two arcs of a circle on which charges $+Q$ and $-Q$ have been spread uniformly. d) What is the work needed to bring a charge $q$ from infinity to the center of this arrangement? e) If the lower arc is instead charged positively, what would be the work needed in d?

          Two equal point charges Q are separated by a distance $d$.
a) How much energy is required to assemble (put together) this system?
b) What is the potential in the middle between the two charges?
c) One of the charges is released and moves away from the other due only to the electrical force between them. When the moving charge is a distance $3d$ from the other charge, what is its kinetic energy?
The figure shows two arcs of a circle on which charges $+Q$ and $-Q$ have been spread uniformly.
d) What is the work needed to bring a charge $q$ from infinity to the center of this arrangement?
e) If the lower arc is instead charged positively, what would be the work needed in d?

Two equal point charges Q are separated by a distance d.
a) How much energy is required to assemble (put together) this system?
b) What is the potential in the middle between the two charges?
c) One of the charges is released and moves away from the other due only to the electrical force between them. When the moving charge is a distance 3d from the other charge, what is its kinetic energy?
The figure shows two arcs of a circle on which charges +Q and -Q have been spread uniformly.
d) What is the work needed to bring a charge q from infinity to the center of this arrangement?
e) If the lower arc is instead charged positively, what would be the work needed in d?

Added by Claudia A.

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