Part ( a ) of the figure below shows an electron moving along an electric dipole

Question

Part (a) of the figure below shows an electron moving along an electric dipole axis toward the negative side of the dipole. The dipole is fixed in place. The electron was initially very far from the dipole, with a kinetic energy of 100 eV. Part (b) of the figure gives the kinetic energy K of the electron versus its distance r from the dipole center. What is the magnitude of the dipole moment? The scale of the horizontal axis is set by rs = 0.25 m.
1           C

of the figure below shows an electron moving along an electric dipole axis toward the negative side of the dipole. The dipole is fixed in place. The electron was initially very far from the dipole, with a kinetic energy of 100 eV. Part (b) of the figure gives the kinetic energy K of the electron versus its distance r from the dipole center. What is the magnitude of the dipole moment? The scale of the horizontal axis is set by rs = 0.25 m.

Explanation / Answer

V = 1/(4???) (p cos ?) / r

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