Two Spheres Are Made of Wood-The First Is of a Variety

question 3

Multiple Choice

Two spheres are made of wood-the first is of a variety of wood whose density is equal to that of water, while the second is of a variety whose density is greater than that of water. These spheres have the same volume, and the first remains wherever it is placed in the water (so it is effectively suspended in mid-water) . The second rests on the bottom, being more dense than water. Compare the buoyant forces on the two spheres.

• A) Nothing specifically can be concluded without knowing exactly the densities of the spheres.
• B) They are identical
• C) The force on the second is zero, and therefore less than that on the first, which is non-zero.
• D) The force on the second is non-zero and is less than that on the first.

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Definitions:

Wernicke's Aphasia

A neurological condition characterized by issues in language comprehension and the production of meaningful language, often due to damage in the brain's Wernicke's area.

Broca's Area

A region in the frontal lobe of the dominant hemisphere (usually the left) of the brain associated with speech production and language processing.

Retrograde Amnesia

A condition involving loss of memory for events that occurred before the onset of amnesia.

Hippocampus

A major component of the brain in humans and other vertebrates, involved in the consolidation of information from short-term memory to long-term memory, and in spatial memory that enables navigation.