Physics
When a ship enters the sea from a river

It rises or sinks depending on the material it is made of
It rises a little
It remains at the same level
It sinks a little

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Physics
Solids have definite shapes.This is because

The forces of cohesion are very large
The forces of adhesion are less
The forces of adhesion are large
The forces of cohesion of the molecules within are very much less in them

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