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OpenStudy (anonymous):
If a satellite weighs 321 lb. on the earth's surface (R = 4,000 miles), how much does it weigh 12,000 miles above the surface? (Use only one significant digit in the answer) I got 20 at first then I tried another way and got 40 im sooo confused .
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OpenStudy (anonymous):
GMm/r^2 is the universal equation for gravitational attraction. Use this with SI units and you should be good.
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