(a) The mass and the radius of the sun are, respectively, 1.99 × 1030 kg and 6.96 × 108 m. What is its density?

(b) If a solid object is made from a material that has the same density as the sun, would it sink or fl oat in water? Why?

(c) Would a solid object sink or fl oat in water if it were made from a material whose density was the same as that of the planet Saturn (mass = 5.7 × 1026 kg, radius = 6.0 × 107 m)? Provide a reason for your answer.