Castilla-La Mancha PAU Physics (Física - UCLM 2026) Practice Questions - Castilla-La Mancha PAU Physics Examination - Universidad De Castilla-La Mancha (UCLM 2026) Exam

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A satellite of mass m describes a circular orbit of radius r = 2 R_T around the Earth (mass M_T). What is the expression for its orbital velocity v_o?

v_o = √(G · M_T / R_T) v_o = √(G · M_T / (2 R_T)) v_o = √(2 G · M_T / R_T) v_o = G · M_T / (2 R_T²)

Correct Answer:

v_o = √(G · M_T / (2 R_T))

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