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Physics
Physics
Problem
A space probe moves in a circular orbit around Earth. The kinetic energy of the probe is
E
E
E
. The probe will reach the escape speed when its kinetic energy is increased at least to: A.
2
E
\sqrt{2}E
2
E
B.
2
E
2E
2
E
C.
2
2
E
2\sqrt{2}E
2
2
E
D.
4
E
4E
4
E
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