The gravity of a stone is 5N in the air and 2n in the water

The gravity of a stone is 5N in the air and 2n in the water

F = ρ liquid GV
5-2=1.0*10^3*10V
V=3*10^-4m^3
m=G/g=5N/(10N/kg)=0.5kg
So the density of stone is: ρ stone = m / v = 0.5kg / (3 * 10 ^ - 4m ^ 3) = 1.67 * 10 ^ 3kg / m ^ 3

A piece of wood has a volume of 100 cubic centimeters and a density of 0.6 * 10000 kg / cubic meter
1) How buoyant is the block when it is completely pressed into the water by hand?
(2) What is the buoyancy of the wooden block when it is still after release? (g = 10N / kg)

1) When it is completely pressed into the water by hand, the buoyancy of the block is 1 n
(2) After releasing the handle, the buoyancy of the wood block at rest is 6N (g = 10N / kg)
The density of wood in your question is not correct

How to convert kilogram per cubic meter into gram per cubic centimeter? For example, 0.8 × 10-179

0.8 × 10 & # 179; kg / m3 = 0.8 × 10 & # 179 / / 1000000g / cm3