The density of pine varies significantly depending on the variety and the actual piece. values between 0,34 and 1,02 can be found from various sources. A board 2 cm thick, 10 cm wide and 5 meters...
Whatever it is....
A 'piece of wood' is very vague. It all depends on the size of the piece and what type of wood it is. Strictly, the weight is the volume of the piece multiplied by the density of...