Advertisements for a certain small car claim that it floats in water. (a) If the car’s mass is 900 kg and its interior volume is 3.0 m3, what fraction of the car is immersed when it floats? You can ignore the volume of steel and other materials. (b) Water grad- ually leaks in and displaces the air in the car. What fraction of the interior volume is filled with water when the car sinks?