TB_chapter9 - Chapter 9, Solids and Fluids CHAPTER 9...

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Chapter 9, Solids and Fluids C HAPTER 9 Conceptual Problems C1. A container is filled with water and the pressure at the container bottom is P . If the container is instead filled with oil having specific gravity 0.80, what new bottom pressure results? a. a pressure < P b. the same pressure P c. a pressure > P d. This is unable to be determined with the information given. C2. A container is filled with water and the pressure at the bottom of the container is P . Then the container is emptied halfway and topped off with oil of density 3 3 m / kg 10 80 . 0 × , which floats on top of the water. What is the pressure at the bottom of the container now? a. a pressure < P b. the same pressure P c. a pressure > P d. This is unable to be determined with the information given. C3. At a pressure of 1 atmosphere a column of mercury in a barometer is supported to the height h = 0.76 m. The density of mercury is 3 3 m / kg 10 6 . 13 × . A barometer of similar design filled with water would support a column of water how high at a pressure of 1 atmosphere? a. more than ten times h b. about 1.36 h c. less than one tenth h d. the same height h C4. When an artery gets a constricted region due to plaque, how does the pressure in this region compare to the pressure in an unconstricted region adjacent? a. Since this is a closed system, the pressure is the same in both regions. b. In the constricted region the blood moves at a higher speed than in the unconstricted region resulting in an increased pressure. c. In the constricted region the blood moves at a higher speed than in the unconstricted region resulting in a decreased pressure. d. In the constricted region the blood moves at a lower speed than in the unconstricted region resulting in an increased pressure. C5. An ice cube with a small solid steel sphere frozen inside floats in a glass of water filled to the brim. What happens to the level of water in the glass as a result of the ice melting? a. It goes up, overflowing. b. It stays the same. c. It goes down. d. It depends on air pressure, thus the answer is indeterminate. 9.1 States of Matter 128
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Chapter 9, Solids and Fluids 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
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TB_chapter9 - Chapter 9, Solids and Fluids CHAPTER 9...

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