A satellite is orbiting Earth at a constant speed so that it travels 2.8×104km each hour. How far does it travel in one year, that is, in 8.76×103?
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ANSWER
F
g
=
r
mv
2
r
2
GMm
=
r
mv
2
V=
r
GM
=
2.02×10
6
(6.67×10
−11
)(8×10
22
)
V=1.625×10
3
T=
V
2πr
n×T=24×60×60
n[
1.625×10
3
2π(2.02×10
6
)
]=24×3600
n=
2π(2.02times10
6
)
24×3600×1.625×10
3
n=11
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