Question

Steel coin is sink in water but float in mercury why

Answer 1

There is a term buoyancy, it is a upward force exerted by a fluid. Depending on the density of the liquid, the force maybe stronger than gravitational force or it maybe weaker. The object sinks when gravitational is greater or stronger than the buoyant force.

Answer 2

Your Answer:

When kept in water, steel coin sinks because its density is more compared to the density of
water.

When kept in mercury, steel coin floats because its density is less compared to density of mercury.

Hope this helps you..
Mark Brainliest ♡