The binding energy of a satellite revolving around planet in a circular orbit is 3 × 10^9 J. Its kinetic energy is ______
The binding energy of a satellite revolving around planet in a circular orbit is 3 × 109 J. Its kinetic energy is ______
(A) 6 × 109 J
(B) -3 × 109 J
(C) -6 × 10+9 J
(D) 3 × 10+9 J
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