The ones which float have a lower density than water, whereas those which sink have a higher density than water. However, also the shape the material is in influences whether it sinks or floats.
although the shape of material decides whether it sink or float, it also depends on the material. for eg. an iron plate with hole will sink but a thermocol piece will not. if there is two materials...
This depends on what the material is floating or sinking in. If an object in water that has a higher density than water will sink, but if it has a lower density it will float. For example, water has...