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
It rises a little
When a ship enters a sea from a river ,the ship is elevated or uplifted due to the density of sea water and during the buoyant motion of the ship, as it would gain both potential and kinetic energy when rising in the fluid.
2. In an optical fibre the signal is transmitted
4. A person is hurt on kicking a stone due to
5. Which of the following is the fastest communication channel?
6. An oil drop spreads over water because
7. Among the following materials sound travels fastest in