The orbital speed of an artificial satellite very close to the surface of the earth is . Then the orbital speed of another artificial satellite at a height equal to three times the radius of the earth is |
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b) |
c) |
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The orbital speed of an artificial satellite very close to the surface of the earth is . Then the orbital speed of another artificial satellite at a height equal to three times the radius of the earth is |
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a) |
b) |
c) |
d) |