The mass of the iron ball is 8kg, and its volume is 3dm3. Determine if this ball is solid? The density of iron is 7.8 * 10 ^ 3 kg / m3

Let’s translate into SI system: 3dm3 = 3: 1000 = 0.003m3
Find the density of the ball
density is equal to the ratio of mass to volume, it turns out 8 / 0.003 = 2666 kg / m3
7.8 * 10 ^ 3 kg / m3 = 7800
because the density of the ball is not equal to the density of iron, then the ball is not solid



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.