Question

Or rectangle piece of wood measures 2cm,4cm,7cm with mass of 20g .will the piece of wood will float on the surface of water which has a density of 1g/cm3

Answer 1

clearly a mass per unit volume....and so... ρ=25.0⋅g29.4⋅cm3=0.850⋅g⋅cm−3 ...and note that 1

hope it helps u⋅cm3≡1⋅mL