Review Exam 3-New.doc - 1 - Physics 1401 - Exam 3 Chapter 9 Review 2. At standard temperature and pressure, carbon dioxide has a density of 1.98 kg/m3. What volume does 0.85 kg of carbon dioxide occupy at standard temperature and pressure? (a) 0.43 m3 (c) 1.7 m3 (e) 4.8 m3 (b) 0.86 m3 (d) 2.3 m3 3. What mass of water (at 4.0 °C) can be contained in a rectangular box whose dimensions are 10.0 cm by 5.00 cm by 1.00 cm? The density of water at 4.0 °C is 1.000 × 103 kg/m3. (a) 5.0 g (c) 25.0 g (e) 0.25 kg (b) 10.0 g (d) 50.0 g 4. The density of iron is 7860 kg/m3. What is the mass of an iron sphere whose diameter is 0.50 m? (a) 123 kg (c) 514 kg (e) 4110 kg (b) 164 kg (d) 983 kgReview Exam 3-New.doc - 2 - 7. A solid cylinder has a radius of 0.051 m and a height of 0.0030 m. The cylinder is composed of two different materials with mass densities of 1950 kg/m3 and 1470 kg/m3. If each of the two materials occupies an equal volume, what is the mass of the cylinder? (a) 8.4 × 10-2 kg (c) 6.5 × 10-2 kg (e) 4.2 × 10-2 kg (b) 7.1 × 10-2 kg (d) 5.3 × 10-2 kg Questions 15 and 16 pertain to the situation described below: A swimming pool has the dimensions shown in the drawing. It is filled with water to a uniform depth of 8.00 m. The density of water = 1.00 × 103 kg/m3. 15. What is the total pressure exerted on the bottom of the swimming pool? (a) 0.79 × 105 Pa (c) 1.80 × 105 Pa (e) 2.49 × 105 Pa (b) 1.48 × 105 Pa (d) 1.97 × 105 PaReview Exam 3-New.doc - 3 - 16. What is the total force exerted on the bottom of the swimming pool? (a) 2.40 × 107 N (c) 5.90 × 107 N (e) 8.40 × 107 N (b) 5.40 × 107 N (d) 7.50 × 107 N 26. Which one of the following statements concerning a completely enclosed fluid is true? (a) Any change in the applied pressure of the fluid produces a change in pressure that depends on direction. (b) The pressure at all points within the fluid is independent of any pressure applied to it. (c) Any change in applied pressure produces an equal change in pressure at all points within the fluid. (d) An increase in pressure in one part of the fluid results in an equal decrease in pressure in another part. (e) The pressure in the fluid is the same at all points within the fluid. 27. A force of 250 N is applied to a hydraulic jack piston that is 0.01 m in diameter. If the piston which supports the load has a diameter of 0.10 m, approximately how much mass can be lifted by the Ignore any difference in height between the pistons. (a) 255 kg (c) 800 kg (e) 6300 kg (b) 500 kg (d) 2550 kgReview Exam 3-New.doc - 4 - 28. In a car lift, compressed air with a gauge pressure of 4.0 × 105 Pa is used to raise a piston with a circular cross-sectional area. If the radius of the piston is 0.17 m, what is the maximum mass that can be raised using this piston? (a) 530 kg (c) 9800 kg (e) 41 000 kg (b) 3700 kg (d) 22 000 kg 30. 30. A 2-kg block displaces 10 kg of water when it is held fully immersed. The object is then tied down as shown in the figure; and it displaces 5 kg of water. What is the tension in the string? (a) 10 N (d) 70 N (b) 20 N (e) 100 N (c) 30 N 32. Three blocks labeled A, B, and C are floating in water as shown in the drawing. Blocks A and B have the same mass and volume. Block C has the same volume, but is submerged to a greater depth than the other two blocks. Which one of the following statements concerning this situation is false? (a) The density of block A is less than that of block C. (b) The buoyant force acting on block A is equal to that acting on block B. (c) The volume of water displaced by block C is greater than that displaced by block B. (d) The buoyant force acting on block C is greater than that acting on block B. (e) The volume of water displaced by block A is greater than that displaced by block B.Review Exam 3-New.doc - 5 - 31. A balloon inflated with helium gas (density = 0.2 kg/m3) has a volume of 6 ⋅ 10–3 m3. If the density of air is 1.3 kg/m3, what is the buoyant force exerted on the balloon? (a) 0.01 N (c) 0.8 N (e) 7.8 N (b) 0.08 N (d) 1.3 NReview Exam 3-New.doc - 6 - Physics 1401 Chapter 10 & 11 Review 4. The speed of sound in a certain metal block is 3.00 x103 m/s. The graph shows the amplitude (in meters) of a wave traveling through the block versus time (in milliseconds). What is the wavelength of this wave? (a) 0.5 m (d) 4.0 m (b) 1.5 m (e) 6.0 m (c) 3.0 m 7. What is the wavelength of a wave with a speed of 12 m/s and a period of 0.25 s? (a) 0.25 m (c) 3.0 m (e) 48 m (b) 1.5 m (d) 24 m 7. Questions 9 through 12 pertain to the situation described below: The displacement of a vibrating string versus position along the string is shown in the figure. The periodic waves have a speed of 10.0 cm/s. A and B are two points on the string.Review Exam 3-New.doc - 7 - 9. What is the amplitude of the wave? (a) 2 cm (b) 4 cm (c) 8 cm (d) 12 cm (e) 16 cm 10. What is the wavelength of the wave? (a) 3.0 cm (c) 9.0 cm (e) 15 cm (b) 6.0 cm (d) 12 cm 11. What is the frequency of the wave? (a) 0.60 Hz (c) 1.1 Hz (e) 1.7 Hz (b) 0.90 Hz (d) 1.3 Hz 12. What is the difference in phase between the points A and B? (a) (π/4) radians (c) ππππradians (e) 2πradians (b) (π/2) radians (d) (3π/4) radiansReview Exam 3-New.doc - 8 - 14. A steel wire of mass 0.400 kg and length 0.640 m supports a 102-kg block. The wire is struck exactly at its midpoint causing a small displacement. How long does it