A Piece of Wood Is Floating in a Bathtub

question 19

Multiple Choice

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 up.
• B) It goes down.
• C) It does not change.
• D) This cannot be determined without knowing the volume of the top piece of wood.

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Definitions:

Constant Tension

A state in which a muscle remains at a singular tension level without shortening or lengthening significantly.

Tetanus

Tetanus is a serious bacterial infection characterized by muscle stiffness and spasms, caused by the toxin of the bacterium Clostridium tetani.

Multiple Wave Summation

The phenomenon where muscle force is increased by increasing the frequency of stimulation, leading to a greater degree of overlap in muscle fiber contraction.

Active Sites

Regions on an enzyme where substrates bind and undergo a chemical reaction.