A plastic cube of edge 10cm and mass 0.75kg is first released in fresh water at 4∘C (density 1000kgm−3) and then in kerosene (density 800kgm−3).
(i) Calculate the weight of the cube.
(ii) If the cube were completely submerged in water, what buoyant force would act on it?
(iii) Will the cube actually float or sink in water? If it floats, find the height of the cube that remains above the water surface.
(iv) Repeat parts (ii) and (iii) for kerosene.