Respuesta :
Answer: cork and wax
Explanation: Density is defined as the mass of substance contained per unit volume.
A substance which has higher density than water will sink in water and the one which has lower density than water will float in water.
Given: density of water = [tex]1.0 g/cm^3[/tex]
As we know: density of aluminium = [tex]2.70 g/cm^3[/tex]
density of cork = [tex]0.24 g/cm^3[/tex]
density of iron= [tex]7.87 g/cm^3[/tex]
density of lead= [tex]11.34 g/cm^3[/tex]
density of wax = [tex]0.9 g/cm^3[/tex]
Thus as density of cork and wax is lower as compared to water, both cork and wax will float in water.