Ch9_TestBank - Chapter 9, Solids and Fluids CHAPTER 9 9.1...

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Chapter 9, Solids and Fluids 120 C HAPTER 9 9.1 States of Matter 9.2 The Deformation of Solids 1. Which state of matter is associated with the very highest of temperatures? a. liquid b. plasma c. gas d. solid 2. A copper wire of length 2.0 m, cross sectional area 7.1 × 10 - 6 m 2 and Young’s modulus 11 × 10 10 N/m 2 has a 200-kg load hung on it. What is its increase in length? ( g = 9.8 m/s 2 ) a. 0.50 mm b. 1.0 mm c. 2.5 mm d. 5.0 mm 3. In an elastic solid there is a direct proportionality between strain and: a. elastic modulus. b. temperature. c. cross-sectional area. d. stress. 4. The quantity “stress” expressed in terms of the fundamental quantities (mass, length, time) is equivalent to: a. MLT - 1 . b. ML - 1 T - 2 . c. M 2 L - 1 T - 3 . d. a dimensionless quantity. 5. The quantity “strain” expressed in terms of the fundamental quantities (mass, length, time) is equivalent to: a. MLT - 1 . b. ML - 1 T - 2 . c. M 2 L - 1 T - 3 . d. a dimensionless quantity.
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Chapter 9, Solids and Fluids 121 6. The bulk modulus of a material, as a meaningful physical property, is applicable to which of the following? a. only solids b. only liquids c. only gases d. solids, liquids and gases 7. A uniform pressure of 7.0 × 10 5 N/m 2 is applied to all six sides of a copper cube. What is the percentage change in volume of the cube? (for copper, B = 14 × 10 10 N/m 2 ) a. 2.4 × 10 - 2 % b. 0.4 × 10 - 2 % c. 8.4 × 10 - 2 % d. 0.5 × 10 - 3 % 8. Bar One has a Young’s modulus that is bigger than that of Bar Two. This indicates Bar One: a. is longer than Bar Two. b. has a greater cross-sectional area than Bar Two. c. has a greater elastic limit than Bar Two. d. is made of material that is different from Bar Two. 9. Consider two steel rods, A and B. B has three times the area and twice the length of A, so Young’s modulus for B will be what factor times Young’s modulus for A? a. 3.0 b. 0.5 c. 1.5 d. 1.0 10. A tire stops a car by use of friction. What modulus should we use to calculate the stress and strain on the tire? a. Young’s modulus b. compression modulus c. shear modulus d. bulk modulus 11. How large a force is necessary to stretch a 2.0-mm-diameter steel wire ( Y = 2.0 × 10 11 N/m 2 ) by 1.0%? a. 3.1 × 10 3 N b. 6.3 × 10 3 N c. 9.4 × 10 3 N d. 1.3 × 10 4 N
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Chapter 9, Solids and Fluids 122 9.3 Density and Pressure 12. The standard kilogram is a platinum-iridium cylinder 39.0 mm in height and 39.0 mm in diameter. What is the density of the material? a. 21.5 g/cm 3 b. 19.3 g/cm 3 c. 13.6 g/cm 3 d. 10.7 g/cm 3 13. The quantity “pressure” expressed in terms of the fundamental quantities (mass, length, time) is equivalent to: a. MLT - 1 . b. ML - 1 T - 2 . c. M 2 L - 1 T - 3 . d. a dimensionless quantity.
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This note was uploaded on 02/23/2010 for the course PHY 2043 taught by Professor Isac during the Fall '09 term at University of Florida.

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Ch9_TestBank - Chapter 9, Solids and Fluids CHAPTER 9 9.1...

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