Answer in detail. 1. How will you determine the density of an irregular solid using Eureka can? 2. What happens when a body is immersed in a liquid? Discuss all the cases. 3. How can submarines and whales sink and rise to the water surface at their own will? How can you make your own hydrometer? Explain in steps. 5. The mass of an iron ball is 800 g. What should be the volume of the ball if the density is 7.87 g cm-3? Also find the density in the SI unit and the relative density. 6. An aluminium ball and a gold ball are placed over mercury. What will happen to both the balls? (Check the densities of the substance using the table given in the chapter.)
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