For an electron and an oxygen ion O + in the Earth's ionosphere, at 300 km altitude
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For an electron and an oxygen ion O+ in the Earth's ionosphere, at 300 km altitude in the equatorial plane, where B ≃ 0.5 * 10–4 tesla, calculate:
(a) The gravitational drift velocity vg .
(b) The gravitational current density Jg , considering ne = ni = 1012 m–3 .
Assume that g is perpendicular to B.
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