Mechanics of Fluids SI Edition 5th Edition by Potter - Test Bank

Mechanics of Fluids Chapter 1: Basic Considerations

Sections 1.1 – 1.3

1. If force was selected as a fundamental dimension rather than mass, the units on density would

be:

(A) kg/m3

(B) N·s2/m4

(C) N/s2·m2

(D) s2/N·m2

2. Which of the following is not acceptable in the SI system of units?

(A) N·cm/s

(B) kg/L

(C) m/ns

(D) J/m2

3. The energy usage in the United States in 2010 was about 100 × 1018 J. This can be written as:

(A) 100 million GJ

(B) 1000 million GJ

(C) 100 billion MJ

(D) 100 trillion MJ

4. The fluids that are considered in this text:

(A) Have relatively low viscosities

(B) Must be subjected to a normal stress to have motion

(C) Have molecules that move relatively slowly

(D) Move when subjected to any shear stress

5. The mean free path where commercial aircraft fly (about 30,000 ft) is nearest:

(A) 0.0076 mm

(B) 0.0026 mm

(C) 0.00076 mm

(D) 0.00016 mm

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