Q6. A moon orbits a planet with a period of 13 days and radius \( 1.0 \times 10^9 \, \text{m} \). What is the planet’s mass? (\( G = 6.67 \times 10^{-11} \, \text{N m}^2/\text{kg}^2, 1 \, \text{day} = 86400 \, \text{s} \))
- A. 4.6 × 10²⁵ kg
- B. 4.7 × 10²⁵ kg
- C. 4.8 × 10²⁵ kg
- D. 4.9 × 10²⁵ kg