Problem 1CP: What is the difference between intensive and extensive properties? Problem 2CP: For a substance, what is the difference between mass and molar mass? How are these two related? Problem 3CP: What is specific gravity? How is it related to density? Problem 4CP: The specific weight of a system is defined as the weight per unit volume (note that this definition... Problem 5CP: Under what conditions is the ideal-gas assumption suitable for real gases? Problem 6CP: What is the difference between R and Ru? How are these two related? Problem 7P: A 75-L container is filled with 1 kg of air at a temperature of 27C . What is the pressure in the... Problem 8EP: A mass of 1-Ibm of argon is maintained at 200 psia and 100°F in a tank. What is the volume of the... Problem 9EP: What is the specific volume of oxygen at 40 psia and 80°F? Problem 10P: A fluid that occupies a volume of 24 L weighs 22 N at a location where the gravitational... Problem 11EP: The air in an automobile tire with a volume of 2.60 ft3 is at 70°F and 22 psig. Determine the amount... Problem 12P: The pressure in an automobile tire depends on the temperature of air in the tire. When the air... Problem 13P: A spherical balloon with a diameter of 9 m is filled with helium at 20C and 200 kPa. Determine the... Problem 15P: A cylindrical tank of methanol has a mass of 60kg and a volume of 75 L. Determine the methanol’s... Problem 16P: The combustion in a gasoline engine may be approximated by a constant volume heat addition process,... Problem 19P: Consider Table 2-1 in the textbook, which lists the specific gravities of various substances. (a)... Problem 20CP: What is vapor pressure? How is it related to saturation pressure? Problem 21CP: Does water boil at higher temperatures at higher pressures? Explain. Problem 22CP Problem 23CP: What is cavitation? What causes it? Problem 24EP Problem 25P: A pump is used to transport water to a higher reservoir. If the water temperature is 20°C, determine... Problem 26P Problem 27CP Problem 28CP: List the forms of energy that contribute to the internal energy of a system. Problem 29CP: How are heat, internal energy, and thermal energy related to each other? Problem 30CP: What is flow energy? Do fluids at rest possess any flow energy? Problem 31CP: How do the energies of a flowing fluid and a fluid at rest compare? Name the specific forms of... Problem 32CP: Using average specific heats, explain how internal changes of ideal gases and incompressible... Problem 33CP Problem 34EP Problem 35P: Saturated water vapor at 150°C (enthalpy h=2745.9kJ/kg ) flows in a pipe at 35 m/s at an elevation... Problem 36CP: What does the coefficient of volume expansion of a fluid represent? How does it differ from the... Problem 37CP Problem 38CP: Can the coefficient of compressibility of a fluid be negative? How about the coefficient of volume... Problem 39P: Use the coefficient of volume expansion to estimate the density of water as it is heated from 60F to... Problem 40P: The volume of an ideal gas is to be reduced by half by compressing isothermally. Determine the... Problem 41P: Water at 1 atm pressure is compressed to 400 atm pressure isothermally. Determine the increase in... Problem 42P Problem 43P: Saturated refrigerant-134a liquid at 10C is cooled to 0C at constant pressure. Using coefficient of... Problem 44P Problem 45P Problem 46P: The density of seawater at a free surface where the pressure is 98 kPa is approximately 1030 kg/m3.... Problem 47EP Problem 48P: A frictionless piston-cylinder device contains 10 kg of water at 20C at atmospheric pressure. An... Problem 49P: Reconsider Prob. 2-48. Assuming a bear pressure increase during the compression, estimate the energy... Problem 50P Problem 51P Problem 52CP Problem 53CP Problem 54CP: In which medium will sound travel fastest for a given temperature: air, helium, or argon? Problem 55CP Problem 56CP Problem 57CP Problem 58CP: Is then sonic ve1ocity a specified medium a fixed quantity, or does it change as the properties of... Problem 59P Problem 60P: Carbon dioxide enters an adiabatic nozzle at 1200 K with a velocity of 50 m/s sand leaves at 400 K.... Problem 61P Problem 62P: Assuming ideal gas behavior, determine the speed of sound in refrigerant-133a at 0.8 MPa and 70°C. Problem 63P Problem 64EP: Steam flows through a device with a pressure of 120 psia, a temperature of 700°F, and a velocity of... Problem 66P: Air expands isentropically from 2.2 MPa 77C to 0.4 MPa. Calculate the ratio of the initial to the... Problem 67P: Repeat Prob. 2-66 for helium gas. Problem 68P: The Airbus A-340 passenger plane has a maximum takeoff weight of about 260,000 kg, a length of 64 m,... Problem 69CP Problem 70CP: What is viscosity? What is the cause of it is liquids and in gases? Do liquids or gases have higher... Problem 71CP: How does the kinematic viscosity of (a) liquids and (b) gases vary with temperature? Problem 72CP Problem 73EP: The viscosity of a fluid is to be measured by a viscometer constructed of two 5-ft-long concentric... Problem 74P: The dynamic viscosity of carbon dioxide at 50°C and 200°Care 1.612105Pas and 2.276105Pas ,... Problem 75P: Consider the flow of a fluid with viscosity through a circular pipe. The velocity profile in the... Problem 76P: The viscosity of a fluid is to be measured by a viscometer constricted of two 75-cm-long concentric... Problem 77P: A thin 30cm30cm flat plate is pulled at 3 m/s horizontally through a 3.6-mm-thick oil layer... Problem 78P: A rotating viscometer consists of two concentric cylinders-an inner cylinder of radius Ri rotating... Problem 82P: For flow over a plate, the variation of velocity with vertical distance y from the plate is given... Problem 83P: In regions far from the entrance, fluid flow through a circular pipe is one dimensional, and the... Problem 84P: Repeat Prob. 2-83 for umax=6m/s . Problem 85P: A frustum-shaped body is rotating at a constant angular speed of 200 rad/s in a container filled... Problem 86P: A rotating viscometer consists of two concentric cylinders-a stationary inner cylinder of radius Ri... Problem 87P: A thin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity... Problem 88P Problem 89P: A cylinder of mass m slides down from rest in a vertical tube whose inner surface is covered by a... Problem 90CP: What is surface tension” What is its cause? Why is the surface tension also called surface energy? Problem 91CP: What is the capillary effect? What is its cause? How is it affected by the contact angle? Problem 92CP Problem 93CP Problem 94CP: Is the capillary rise greater in small- or large-diameter tubes? Problem 95P: Determine the gage pressure inside a soap bubble of diameter (a) 0.2 cm and (b) 5 cm at 20°C. Problem 96EP: A2.4-in-diameter soap bubble is to be enlarged by blowing air into it. Taking the surface tension of... Problem 97P Problem 98P: Consider a 0.15-mm diameter air bubble a liquid. Determine the pressure difference between the... Problem 99P Problem 100P: A capillary tube of 1.2 mm diameter is immersed vertically in water exposed to the atmosphere.... Problem 101EP Problem 102P Problem 103P: Contrary to what you might expect, a solid steel ball can float on water due to the surface tension... Problem 104P: Nutrients dissolved in water are carried to upper parts of plants by tiny tubes partly because of... Problem 105P: Consider a 55-cm-long journal bearing that is lubricated with oil whose viscosity is 0.1kg/ms at 20C... Problem 106P Problem 107EP Problem 108P: A 10-m3 tank contacts nitrogen at 25C and 800kPa. Some nitrogen is allowed to escape until the... Problem 109P: The absolute pressure of an automobile tire is measured to be 320 kPa before a trip and 335 kPa... Problem 110EP: The analysis of a propeller that operates in water at 60F shows that the pressure at the tips of the... Problem 111P: A closed tank is partially filled with water at 70C. If the air above the water is completely... Problem 112P Problem 113P: A rigid tank contains an ideal gas at 300kPa and 600K. Half of the gas is withdrawn from the tank... Problem 114P: The composition of a liquid with suspended solid particles is generally characterized by the... Problem 116P: A newly produced pipe with diameter of 3m and length 15m is to be tested at 10MPa using water at... Problem 117P: Prove that the coefficient of volume expansion for an ideal gas is idealgas=1/T . Problem 118P: Although liquids, in general, are hard to compress, the compressibility effect (variation in the... Problem 119EP: Air expands isentropically from 200psia and 240F to 60psia. Calculate the ratio of the initial to... Problem 120P Problem 121P: Reconsider Prob. 2-120. The shaft now rotates with a constant angular speed of n=1450rpm in a... Problem 122P: Derive a relation for the capillary rise eta liquid between two large parallel plates a distance t... Problem 123P: A 10-cm diameter cylindrical shaft rotates inside a 50-cm-long10.3-cm diameter bearing. The space... Problem 124P: A large plate is pulled at a constant spend of U=4m/s over a fixed plate on 5-mm-thick engine oil... Problem 125P: Some rocks or bricks contain small air pockets in them and have a spongy structure. Assuming the air... Problem 126P: A fluid between two very long parallel plates is heated in a way that its viscosity decreases... Problem 127P: The rotating parts of a hydroelectric power plant having power capacity W have a rotational... Problem 128P: The viscosity of some fluids changes when a strong electric ?eld is applied on them. This phenomenon... Problem 129P Problem 130P Problem 131P Problem 132P: Oil of viscosity =0.0357Pas and density =0.796kg/m3 is sandwiched in the small gap between two very... Problem 133P Problem 134P Problem 135P Problem 136P Problem 137P Problem 138P: Liquid water vaporizes into water vaper as it ?aws in the piping of a boiler. 1f the temperature of... Problem 139P: In a water distribution system, the pressure of water can be as low as 1.4psia. The maximum... Problem 140P: The pressure of water is increased from 100kPa to 900kPa by a pump. The temperature of water also... Problem 141P: An ideal gas is compressed isothermally from 100kPa to 170kPa. The percent increase in the density... Problem 142P: The variation of the density of a fluid with temperature at constant pressure is represented by (a)... Problem 143P Problem 144P: The viscosity of liquids and the viscosity of gases with temperature. (a) Increases, increases (b)... Problem 145P Problem 146P Problem 147P Problem 148P: The dynamic viscosity of air at 20C and 200kPa is 1.8310-5kg/ms. The kinematic viscosity of air at... Problem 149P: A viscometer constructed of two 30-cm -long concentric cylinders is used to measure the Viscosity of... Problem 150P: A 0.6-mm-diameter glass tube is inserted into water at 20C in a cup. The surface tension of water at... Problem 151P Problem 152P Problem 153P Problem 155P Problem 156P Problem 157P Problem 158P: Evan though steel is about 7 to 8 times denser than water, a stat paper clip or razor blade can be... format_list_bulleted