Phy 1122 - Exam Name___________________________________...

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Unformatted text preview: Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Figure 14.1 1) A container has a vertical tube, whose inner radius is 13.00 mm, connected to it at its side. An unknown liquid reaches level A in the container and level B in the tube N level A being 5.0 cm higher than level B . The liquid supports a 20.0- cm high column of oil, between levels B and C , whose density is 730 kg/m 3 . In Fig. 14.1, the mass of the oil, in grams, is closest to: 1) A) 310 B) 390 C) 150 D) 77 E) 230 2) A container has a vertical tube, whose inner radius is 27.00 mm, connected to it at its side. An unknown liquid reaches level A in the container and level B in the tube N level A being 5.0 cm higher than level B . The liquid supports a 20.0- cm high column of oil, between levels B and C , whose density is 830 kg/m 3 . In Fig. 14.1, the gauge pressure at level B is closest to: 2) A) 1600 Pa B) 1200 Pa C) 810 Pa D) 2400 Pa E) 2000 Pa 3) A container has a vertical tube, whose inner radius is 32.00 mm, connected to it at its side. An unknown liquid reaches level A in the container and level B in the tube N evel A being 5.0 cm higher than level B . The liquid supports a 20.0- cm high column of oil, between levels B and C , whose density is 460 kg/m 3 . In Fig. 14.1, the density of the unknown liquid is closest to: 3) A) 1800 kg/m 3 B) 1600 kg/m 3 C) 2000 kg/m 3 D) 1700 kg/m 3 E) 1400 kg/m 3 4) A 3.4- kg solid sphere, made of metal whose density is 4600 kg/m 3 , is suspended by a cord. The density of water is 1000 kg/m 3 . When the sphere is immersed in water, the tension in the cord is closest to: 4) A) 33 N B) 37 N C) 41 N D) 26 N E) 30 N 1 5) A 7.5- kg solid sphere, made of metal whose density is 2400 kg/m 3 , is suspended by a cord. When the sphere is immersed in a liquid of unknown density, the tension in the cord is 18 N. The density of the liquid is closest to: 5) A) 1300 kg/m 3 B) 1800 kg/m 3 C) 1600 kg/m 3 D) 1400 kg/m 3 E) 1700 kg/m 3 6) A 9.9- kg solid sphere, made of metal whose density is 2100 kg/m 3 , is suspended by a cord. The sphere floats when placed in a liquid of density 3000 kg/m 3 . The fraction of the volume of the sphere that is submerged is closest to: 6) A) 0.72 B) 0.70 C) 0.74 D) 0.68 E) 0.66 Figure 14.2 7) A circular wire, 0.08 m in diameter, with a slider wire on it, is in a horizontal plane. A liquid film is formed, bounded by the wires, on the left side of the slider, as shown. The surface tension of the liquid is 65 mN/m. An applied force F , perpendicular to the slider, maintains the film in equilibrium. Ignore the sag in the film. In Fig. 14.2, when the slider is 0.05 m from point P , the applied force F , in mN, is closest to: 7) A) 13 B) 7.6 C) 5.0 D) 2.5 E) 10 8) A circular wire, 0.08 m in diameter, with a slider wire on it, is in a horizontal plane. A liquid film is formed, bounded by the wires, on the left side of the slider, as shown. The surface tension of theformed, bounded by the wires, on the left side of the slider, as shown....
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Phy 1122 - Exam Name___________________________________...

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