37. Two artificial satellites I and II have circular orbits of radii R and 2R, respectively, about the same planet. The orbital velocity of satellite I is v. What is the orbital velocity of satellite II?
(A) 2v
(B) 2v
(C) 2v
(D) 2v
(A) 2v
(B) 2v
(C) 2v
(D) 2v