The Earth's radius is 6.4 $\times$ 10⁶m. The acceleration due to gravity (in g's) that is experienced by an object at a distance of 150 miles (240 km) above the Earth's surface is

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The acceleration due to gravity decreases with the square of the distance from the center of the Earth. At 240 km above the Earth's surface, the distance from the Earth's center is $6.4 \times 10^6 m + 240 \times 10^3 m$. Using the formula for gravitational force, $F = G\frac{m_1m_2}{r^2}$, where $r$ is the distance from the center of the Earth, the acceleration due to gravity is less than 1 g but does not drop to zero or half. It remains significant, hence the closest estimate given the options is 0.92 g, indicating a slight decrease from 1 g due to the increased distance from the Earth's center.

The Earth's Radius Is 6 ×\times× 106 m

The Earth's Radius Is 6 $\times$ 10⁶m