McqMate
| Q. |
When a ship enters the sea from a river |
| A. | It rises a little |
| B. | It sinks a little |
| C. | It remains at the same level |
| D. | It rises or sinks depending on the material it is made of |
| Answer» A. It rises a little | |
|
Explanation: On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, or 599 mM). Seawater is denser than hot fresh water and pure water (density 1.0 g/ml) because the dissolved salts add mass without contributing significantly to the volume. |
|
View all MCQs in
PhysicsNo comments yet