Question

what is density and buoyancy???????

Answer 1

density
the degree of compactness of a substance


buoyancy

the ability or tendency of something to float in water or other fluid.

Answer 2

HERE IS YOURS EXPLANATIONS;

★ Density is defined as Mass Per Unit Volume.

【 SI Units: Density - Kg M^3 , Mass - Kg , Volume - M^3 】

◆ In Easy language to understand, we can say density as the Compactness of a matter.

◆ Observe the difference between A Brick , Water & Air to get a clear view.

★ Buoyancy is the Upward Thrust or the upward Force made by a liquid matter.

◆ Observe By A Iron Nail Sinks & Why Ice Floats on the surface of water.

HOPE IT HELPS