Find the density of a planet with a radius of 8000 m if the gravitational acceleration for the planet, gp, has the same magnitude as the gravitational constant, G (keep the right units for both), where G = 6.67 x 10-11 m3/(kg s2) Hint: Use the expression for the gravitational force and Newton's second law.

Density = 3 x 10⁻⁵ kg/m³

Explanation:

First, we will find the volume of the planet:

Now, we will use the expression for gravitational force to find the mass of the planet:

where,

m = mass = ?

g = acceleration due to gravity = 6.67 x 10⁻¹¹ m/s²

G = Universal Gravitational Constant = 6.67 x 10⁻¹¹ Nm²/kg²

r = radius = 8000 m

Therefore,

Therefore, the density will be:

Density = 3 x 10⁻⁵ kg/m³

answer; i believe the correct answer is (40,000 j) good luck

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