Objects sink or float depending on their Mass and density. If the object has a Density LOWER than water, it will float. Higher than water will sink. You can find density by multiplying its Mass times its Volume, there you have its density. Water has a Density of 1, things with lower may sink, only slightly if there isn't much difference.
it will float
A submarine
objects with higher density than water sink, ones with a lower density float
No, some sink.
yes
Because of the comparative density. If the objects density is greater than water it will sink, if less then it will float.
It will float.
yes
things that have holes
Because some objects are a lot denser than water so the sink and others are less denser so they float
objects that are less dense float to the top.
It is to do with to volume and mass.