PAU Physics (Cantabria) Practice Questions - Cantabria PAU Physics 2026 (Pruebas De Acceso A La Universidad, Universidad De Cantabria) Exam

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A space probe of mass $m = 500\text{ kg}$ moves in a circular orbit of radius $r = 1.0 \times 10^7\text{ m}$ around a body of mass $M = 5.0 \times 10^{24}\text{ kg}$. What is its orbital speed? ($G = 6.67 \times 10^{-11}\text{ N}\cdot\text{m}^2/\text{kg}^2$)

5.77 × 10³ m/s 8.16 × 10³ m/s 3.34 × 10³ m/s 4.08 × 10³ m/s

Correct Answer:

5.77 × 10³ m/s

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