Physical Universe
15th Edition
ISBN: 9780077510534
Author: KRAUSKOPF
Publisher: Mcgraw-hill Higher Education (us)
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Textbook Question
Chapter 5, Problem 35E
A 1200-lb car is equally supported by its four tires, which are inflated to a pressure of 2 bar. What area of each tire is in contact with the road?
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Physical Universe
Ch. 5 - Prob. 1MCCh. 5 - One gram of steam at 100C causes a more serious...Ch. 5 - Prob. 3MCCh. 5 - Heat transfer in a vacuum can occur by a....Ch. 5 - The fluid at the bottom of a container is a. under...Ch. 5 - The pressure of the earths atmosphere at sea level...Ch. 5 - Prob. 7MCCh. 5 - The density of freshwater is 1.00 g/cm3 and that...Ch. 5 - Prob. 9MCCh. 5 - Prob. 10MC
Ch. 5 - Prob. 11MCCh. 5 - Prob. 12MCCh. 5 - Prob. 13MCCh. 5 - Absolute zero may be regarded as that temperature...Ch. 5 - Prob. 15MCCh. 5 - Prob. 16MCCh. 5 - Prob. 17MCCh. 5 - Prob. 18MCCh. 5 - Prob. 19MCCh. 5 - When a vapor condenses into a liquid, a. its...Ch. 5 - Prob. 21MCCh. 5 - Prob. 22MCCh. 5 - Prob. 23MCCh. 5 - Prob. 24MCCh. 5 - Prob. 25MCCh. 5 - The physics of a refrigerator most closely...Ch. 5 - Prob. 27MCCh. 5 - Prob. 28MCCh. 5 - Prob. 29MCCh. 5 - The second law of thermodynamics does not lead to...Ch. 5 - Prob. 31MCCh. 5 - Prob. 32MCCh. 5 - Prob. 33MCCh. 5 - Prob. 34MCCh. 5 - Prob. 35MCCh. 5 - Prob. 36MCCh. 5 - Prob. 37MCCh. 5 - Prob. 38MCCh. 5 - Prob. 39MCCh. 5 - A wooden plank 200 cm long, 30 cm wide, and 40 mm...Ch. 5 - Prob. 41MCCh. 5 - Prob. 42MCCh. 5 - Prob. 43MCCh. 5 - Prob. 44MCCh. 5 - Prob. 45MCCh. 5 - Running hot water over the metal lid of a glass...Ch. 5 - When a mercury-in-glass thermometer is heated, its...Ch. 5 - Three iron bars are heated in a furnace to...Ch. 5 - Why do you think the Celsius temperature scale is...Ch. 5 - Normal room temperature is about 20C. What is this...Ch. 5 - What is the Celsius equivalent of a temperature of...Ch. 5 - Prob. 7ECh. 5 - You have a Fahrenheit thermometer in your left...Ch. 5 - Why is a piece of ice at 0C more effective in...Ch. 5 - Would it be more efficient to warm your bed on a...Ch. 5 - A cup of hot coffee can be cooled by placing a...Ch. 5 - A 150-L water heater is rated at 8 kW. If 20...Ch. 5 - Prob. 13ECh. 5 - Prob. 14ECh. 5 - Prob. 15ECh. 5 - Prob. 16ECh. 5 - Prob. 17ECh. 5 - An essential part of a home solar heating system...Ch. 5 - A 10-kg stone is dropped into a pool of water from...Ch. 5 - Why do tables of densities always include the...Ch. 5 - A room is 5 m long, 4 m wide, and 3 m high. What...Ch. 5 - A 156-kg coil of sheet steel is 0.80 mm thick and...Ch. 5 - A 50-g bracelet is suspected of being gold-plated...Ch. 5 - Prob. 24ECh. 5 - Mammals have approximately the same density as...Ch. 5 - Prob. 26ECh. 5 - Prob. 27ECh. 5 - Some water is boiled briefly in an open metal can....Ch. 5 - When a person drinks a soda through a straw, where...Ch. 5 - Prob. 30ECh. 5 - The three containers shown in Fig. 5-55 are filled...Ch. 5 - A 60-kg swami lies on a bed of nails with his body...Ch. 5 - A tire pump has a piston whose cross-sectional...Ch. 5 - Prob. 34ECh. 5 - A 1200-lb car is equally supported by its four...Ch. 5 - The smallest bone in the index finger of a 75-kg...Ch. 5 - A hypodermic syringe whose cylinder has a...Ch. 5 - Prob. 38ECh. 5 - Why does buoyancy occur? Under what circumstances...Ch. 5 - Two balls of the same size but of different mass...Ch. 5 - A wooden block is submerged in a tank of water and...Ch. 5 - Prob. 42ECh. 5 - Prob. 43ECh. 5 - Prob. 44ECh. 5 - Prob. 45ECh. 5 - Prob. 46ECh. 5 - Prob. 47ECh. 5 - Prob. 48ECh. 5 - Prob. 49ECh. 5 - Prob. 50ECh. 5 - Prob. 51ECh. 5 - Prob. 52ECh. 5 - A 200-L iron tank has a mass of 36 kg. (a) Will it...Ch. 5 - What are the equivalents of 0 K, 0C, and 0F in the...Ch. 5 - A certain quantity of hydrogen occupies a volume...Ch. 5 - A tire contains air at a pressure of 2.8 bar at...Ch. 5 - Prob. 57ECh. 5 - A weather balloon carries instruments that measure...Ch. 5 - To what Celsius temperature must a gas sample...Ch. 5 - Prob. 60ECh. 5 - Prob. 61ECh. 5 - Prob. 62ECh. 5 - Is it meaningful to say that an object at a...Ch. 5 - Prob. 64ECh. 5 - Prob. 65ECh. 5 - The pressure on a sample of hydrogen is doubled,...Ch. 5 - Prob. 67ECh. 5 - Prob. 68ECh. 5 - Prob. 69ECh. 5 - Prob. 70ECh. 5 - To what temperature must a gas sample initially at...Ch. 5 - Prob. 72ECh. 5 - Prob. 73ECh. 5 - You can safely put your hand inside a hot oven for...Ch. 5 - Prob. 75ECh. 5 - Prob. 76ECh. 5 - What is the advantage of installing the heating...Ch. 5 - Why does evaporation cool a liquid?Ch. 5 - Prob. 79ECh. 5 - Prob. 80ECh. 5 - Give as many methods as you can think of that will...Ch. 5 - How much heat is given off when 1 kg of steam at...Ch. 5 - Prob. 83ECh. 5 - Prob. 84ECh. 5 - Prob. 85ECh. 5 - Prob. 86ECh. 5 - Water at 50C can be obtained by mixing together...Ch. 5 - Prob. 88ECh. 5 - Prob. 89ECh. 5 - Prob. 90ECh. 5 - Prob. 91ECh. 5 - Is it correct to say that a refrigerator produces...Ch. 5 - Prob. 93ECh. 5 - Prob. 94ECh. 5 - An engine that operates between 2000 K and 700 K...Ch. 5 - Prob. 96ECh. 5 - Prob. 97ECh. 5 - Prob. 98ECh. 5 - Prob. 99ECh. 5 - Prob. 100E
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- An airplane has a mass M, and the two wings have a total area A. During level flight, the pressure on the lower wing surface is P1. Determine the pressure P2 on the upper wing surface.arrow_forwardA manometer is shown in Figure P15.36. Rank the pressures at the five locations indicated from highest to lowest. Indicate equal pressures, if any. FIGURE P15.36arrow_forwardThe human brain and spinal cord are immersed in the cerebrospinal fluid. The fluid is normally continuous between the cranial and spinal cavities and exerts a pressure of 100 to 200 mm of H2O above the prevailing atmospheric pressure. In medical work, pressures are often measured in units of mm of H2O because body fluids, including the cerebrospinal fluid, typically have nearly the same density as water. The pressure of the cerebrospinal fluid can be measured by means of a spinal tap. A hollow tube is inserted into the spinal column, and the height lo which the fluid rises is observed, as shown in Figure P9.83. If the fluid ruses to a height of 160. mm, we write its gauge pressure as 160. mm H2O. (a) Express this pressure in pascals, in atmospheres, and in millimeters of mercury. (b) Sometimes it is necessary to determine whether an accident victim has suffered a crushed vertebra that is blocking the flow of cerebrospinal fluid in the spinal column. In other cases, a physician may suspect that a tumor or other growth is blocking the spinal column and inhibiting the flow of cerebrospinal fluid. Such conditions ran be investigated by means of the Queckensted test. In this procedure, the veins in the patients neck are compressed lo make the blood pressure rise in the brain. The increase in pressure in the blood vessels is transmitted to the cerebrospinal fluid. What should be the normal effect on the height of the fluid in the spinal tap? (c) Suppose compressing the veins had no effect on the level of the fluid. What might account for this phenomenon?arrow_forward
- An airplane is cruising al altitude 10 km. The pressure outside the craft is 0.287 atm; within the passenger compartment, the pressure is 1.00 atm and the temperature is 20C. A small leak occurs in one of the window seals in the passenger compartment. Model the air as an ideal fluid to estimate the speed of the airstream flowing through the leak.arrow_forwardA negative pressure of 25.0 atm can sometimes be achieved with the device in Figure 11.44 before the water separates. (a) To what height could such a negative gauge pressure raise water? (b) How much would a steel wire of the same diameter and length as this capillary stretch if suspended from above? Figure 11.44 (a) When the piston is raised, it stretches the liquid slightly, putting it under tension and creating a negative absolute pressure P=F/A (b) The liquid eventually separates, giving an experimental limit to negative pressure in this liquid.arrow_forwardReview. In a water pistol, a piston drives water through a large tube of area A1 into a smaller tube of area A2 as shown in Figure P14.46. The radius of the large tube is 1.00 cm and that of the small tube is 1.00 mm. The smaller tube is 3.00 cm above the larger tube. (a) If the pistol is fired horizontally at a height of 1.50 m, determine the time interval required for the water to travel from the nozzle to the ground. Neglect air resistance and assume atmospheric pressure is 1.00 atm. (b) If the desired range of the stream is 8.00 m, with what speed v2 must the stream leave the nozzle? (c) At what speed v1 must the plunger be moved to achieve the desired range? (d) What is the pressure at the nozzle? (e) Find the pressure needed in the larger tube. (f) Calculate the force that must be exerted on the trigger to achieve the desired range. (The force that must be exerted is due to pressure over and above atmospheric pressure.) Figure P14.46arrow_forward
- A backyard swimming pool with a circular base of diameter 6.00 m is filled to depth 1.50 m. (a) Find the absolute pressure at the bottom of the pool. (b) Two persons with combined mass 150 kg enter the pool and float quietly there. No water overflows. Find the pressure increase at the bottom of the pool after they enter the pool and float.arrow_forwardAn ideal fluid flows through a horizontal pipe whose diameter varies along its length. Measurements would indicate that the sum of the kinetic energy per unit volume and pressure at different sections of the pipe would (a) decrease as the pipe diameter increases, (b) increase as the pipe diameter increases, (c) increase as the pipe diameter decreases, (d) decrease as the pipe diameter decreases, or (e) remain the same as the pipe diameter changes.arrow_forwardThe human brain and spinal cord are immersed in the cerebrospinal fluid. The fluid is normally continuous between the cranial and spinal cavities and exerts a pressure of 100 to 200 mm of H2O above the prevailing atmospheric pressure. In medical work, pressures are often measured in units of millimeters of H2O because body fluids, including the cerebrospinal fluid, typically have the same density as water. The pressure of the cerebrospinal fluid can be measured by means of a spinal tap as illustrated in Figure P14.8. A hollow tube is inserted into the spinal column, and the height to which the fluid rises is observed. If the fluid rises to a height of 160 mm, we write its gauge pressure as 160 mm H2O. (a) Express this pressure in pascals, in atmospheres, and in millimeters of mercury. (b) Some conditions that block or inhibit the flow of cerebrospinal fluid can be investigated by means of Queckenstedts test. In this procedure, the veins in the patients neck are compressed to make the blood pressure rise in the brain, which in turn should be transmitted to the cerebrospinal fluid. Explain how the level of fluid in the spinal tap can be used as a diagnostic tool for the condition of the patients spine. Figure P14.8arrow_forward
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