it becomes thinner. mass can't be created or destroyed, it only encompasses solids , liquids, and gasses.
Higher than what ?? If the object's density is higher than the density of water, then the object sinks in the water.
The density decreases.
The rock will break because it can be stretched no farther. An object stretched beyond its elastic limit may be deformed (adopt a new permanent resting shape) or break.
To know this you first need to find the density of the object and the density of the fluid on which the the object shall be kept. If the density of the fluid is more than the object's density then the object will float. The object will sink if the reverse happens.
It is halved.
the density will increase because there will be less space
It floats
Assuming the object is the same straight through - nothing.
it will float
It floats
[object Object]
As "density = mass/volume" or "D=m/V", the density of an object will remain the same unless the mass changes (which is unlikely) or the volume changes (more likely). When an object changes shape, it usually keeps the same volume, unless it is stretched or squashed. Therefore, changing the shape of an object will not necessarily change its density.If the mass of the object did in fact change, It would usually be a result of part of the object breaking off, in which case the volume would also be reduced, leaving the density at the same value.