Buoyancy and Archimedes’ Principle (4B) Practice Test

In a microgravity simulation tank, a researcher uses a neutrally buoyant training block in water (its average density equals the water density). The block is then coated with a thin, waterproof polymer layer that increases its volume slightly but adds negligible mass. Based on Archimedes’ Principle, which outcome would be expected given the described changes?

A student calibrates a hydrometer-like device by placing it into two different aqueous solutions at the same temperature: Solution 1 has density $1.00\ \text{g/mL}$ and Solution 2 has density $1.10\ \text{g/mL}$. The device has fixed mass and floats in both solutions. Based on Archimedes’ Principle, which outcome is expected?