The acceleration due to gravity at Earth's surface can be calculated from the following formula: \( g=\frac{G M}{r^{2}} \) \( \cdot g \) is the acceleration due to gravity at Earth's surface \( \cdot \mathrm{G}=6.67 \times 10^{-11} \mathrm{Nm}^{2} \mathrm{~kg}^{-2} \) is the universal gravitation constant \( \cdot \mathrm{M}=6.00 \times 10^{24} \mathrm{Kg} \) is the mass of Earth. \( \cdot \mathrm{r}=6.37 \times 10^{6} \mathrm{~m} \) is the radius of Earth. 'G' includes a unit of measurement N , called the Newton, that can be re-expressed as "kilograms by metres per second". Use this formula to calculate the value of \( g \) at Earth's surface; correct to one decimal place. (A) \( 9.8 \mathrm{~ms}^{-2} \) (B) \( 9.9 \mathrm{~ms}^{-2} \) (C) \( 10.3 \mathrm{~ms}^{-2} \) (D) \( 9.7 \mathrm{~ms}^{-2} \)
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