Ahypothetical planet has a mass of one-half that of the earth and a radius of twice that of the earth.
what is the acceleration due to gravity on the planet in terms of g, the acceleration due to gravity at the surface of the earth?

a) g/8 b) g/4 c) g/16 d) 2g

Explanation:

Acceleration due to gravity

         G = 6.67 × 10⁻¹¹ m² kg⁻¹ s⁻²

  Let mass of earth be M and radius of earth be r.

  We have

Now

         A hypothetical planet has a mass of one-half that of the earth and a radius of twice that of the earth.

       Mass of hypothetical planet, M' = M/2

       Radius of hypothetical planet, r' = 2r

  Substituting

Option A is the correct answer.

electromagnetic waves travel through space with vacuums. give me brainliest if right.

pe = weightxheight = 2000x1000=2,000,000joules