A point particle with a positive charge, q, and a mass, m, is held stationary by the forces of gravity and electricity above an infinite, thin, planar sheet of positive charge with charge density σ. What is the value of σ? a. qmε0/gr2 b. qε0/mgr2 c. ε0mg/q d. 2qε0/mg e. 2ε0mg/q
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A point particle with a positive charge, q, and a mass, m, is held stationary by the forces of gravity and electricity above an infinite, thin, planar sheet of positive charge with charge density σ. What is the value of σ?
| a. |
qmε0/gr2 |
|
| b. |
qε0/mgr2 |
|
| c. |
ε0mg/q |
|
| d. |
2qε0/mg |
|
| e. |
2ε0mg/q |
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