[\sqrt{\dfrac{2}{3}v}] The orbit velocity of an artificial satellite in a circular orbit just above the earth’s surface is

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The orbit velocity of an artificial satellite in a circular orbit just above the earth’s surface is v. For a satellite orbiting at an altitude of half of the earth’s radius, the orbital velocity is

$\dfrac{ev}{2}$

$\sqrt{\dfrac{3}{2}v}$

$\sqrt{\dfrac{2}{3}v}$

$\dfrac{2}{3v}$

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