A piece of wood is floating in a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If the top piece is taken off and placed in the water, what happens to the water level in the tub?
A) It goes down.
B) It does not change.
C) It goes up.
D) This cannot be determined without knowing the volume of the top piece of wood.
Question 2
A rock is under water in a shallow lake. As the rock sinks deeper and deeper into water, the buoyant force on it
A) decreases. B) increases. C) remains constant.