A piece of iron rests on top of a piece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the water level in the tub?
A)It goes up.
B)It goes down.
C)It does not change.
D)cannot be determined from the information given

Question

Quizplus · Accepted Answer

When the iron is on the wood, it displaces a volume of water equal to the weight of the iron. When the iron is removed and sinks, it displaces a volume of water equal to its own volume, which is less than the volume displaced when it was on the wood. Thus, the water level goes down.

A Piece of Iron Rests on Top of a Piece