Two Girders Are Made of the Same Material

question 19

Multiple Choice

Two girders are made of the same material.Girder A is twice as long as girder B and has a cross-sectional area that is twice as great.The ratio of the mass density of girder A to the mass density of girder B is:

• A)4
• B)2
• C)1
• D)1/2
• E)1/4

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Definitions:

Hypha

One of the threadlike filaments composing the mycelium of a water mold or fungus.

Fruiting Body

The spore-producing structure of fungi and other plants which is usually seen above ground.

Gametangium

A specialized organ or cell in which gametes are formed in algae, fungi, and plants.

Septa

Dividing walls or partitions between two spaces or cavities, often found in the body or in the structure of certain organisms.