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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