If a second planet were of the same radius R and made of the same material but had a hollow center of radius 0.50 R , what would be the acceleration of gravity at its surface

Explanation:

G = Gravitational constant

M = Mass of planet

R = Radius of planet

Acceleration due to gravity on first planet

Assuming that the planets have the same mass density

Density of first planet

Density of second planet

Acceleration due to gravity on the second planet

The acceleration due to gravity of the planet would be times the acceleration due to gravity on the first planet.

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i believe the answer is a hope it and is correct