volume,weight and mass
The weight of water displaced by the floating block of wood is exactly equal to the weight of the ENTIRE block of wood, regardless of how much of the wood is above the water level.
wood
No. It doesn't matter how heavy a block of wood is, it depends on the density of the wood. Generally wood floats as the density of wood is lighter than the density of the water, so it would float.
.83 g/ml
because the wood absorbs the water and its size increases the water enters the wood through small pores
Depends on what the block is made of. A block of wood will float. A block of concrete will sink.
how are wood and battery energy alike
Wood will. A solid block of aluminum will sink. Things float when their density is less than water. There are some woods that sink.
-- The aggregate density of the wood block is 700/1000 = 0.7 the density of water. -- So, as soon as the wood has displaced 0.7 of its volume in water, it has displaced its entire weight in water, and floats. -- The wood floats with 0.7 of its volume below the surface and 0.3 of its volume above it.
200
a block of ebony will sink in water because it's density is 1.2 g/cm3 and the water's density is 1g/cm3
Boyle's Law - upthrust equals the weight of fluid displaced, so the more dense fluid (salt water) will cause the wood to float higher than the less dense fluid (pure water).