A rectangular metal block of volume 10-6m3 at 273k is heated to 573k. If its coefficient of linear expansion is 1.2 x 10-5k-1, the percentage change of it volume is
A piece of wood floats inside water at room temperature with a fraction of it above the liquid surface. As the temperature of the water is raised, the part of the wood above the liquid will
A.
decrease because the density of water decreases with temperature
B.
increase because the density of water decreases with temperature
C.
decreases because the density of water increases with water temperature
D.
increase because the density of water increases with temperature
