Question

3.
4. Why some objects float and some do not? Explain.​

Answer 1

Answer:

Things float when they are positively buoyant, or less dense than the fluid in which they are sitting. This does not mean that an object has to be lighter than the fluid, as in the case of a boat; objects just need to have a greater ratio of empty space to mass than the fluid.

Explanation:

hope it helped u :)

Answer 2

Answer:

some objects are float because they are light in weight so they float on water easily,for example:cotton and oil are float on water.But some objects are sink in water because of their heavy weight,for example:stone,coin ,etc.