Thermodynamics: An Engineering Approach
9th Edition
ISBN: 9781259822674
Author: Yunus A. Cengel Dr., Michael A. Boles
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 1.11, Problem 79P
Repeat Prob. 1–78 for a gage pressure of 40 kPa.
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1-53 The water in a tank is pressurized by air, and the pres-
sure is measured by a multifluid manometer as shown in
Fig. PI-53. Determine the gage pressure of air in the tank if
h = 0.2 m, h, = 0.3 m, and h, = 0.46 m. Take the densities
of water, oil, and mercury to be 1000 kg/m'. 850 kg/m, and
13.600 kg/m, respectively.
Oil
Aic
Mercuty
FIGURE P1-53
Scanned with CamScanner
at a aeptn oI Y m.
at uic UL
1-56 The absolute pressure in water at a depth of 5 m is
read to be 145 kPa. Determine (a) the local atmospheric pres-
sure, and (b) the absolute pressure at a depth of 5 m in a liq-
uid whose specifc gravity is 0.85 at the same location.
Neglectin
eration,
average
1-64
Scanned with CamScanner
D
FIGURE P1-58E
1-59 The piston diameters in Fig. Pl-58E are D, = 10 cm
and D, = 4 cm. When the pressure in chamber 2 is 2000 kPa
and the pressure in chamber 3 is 700 kPa, what is the pres-
1-53 The water in a tank is pressurized by air, and the pres-
sure is measured by a multifluid manometer as shown in
Fig. Pl-53. Determine the gage pressure of air in the tank if
h = 0.2 m, hy = 0.3 m, and h, = 0.46 m. Take the densities
of water, oil, and mercury to be 1000 kg/m', 850 kg/m, and
13,600 kg/m', respectively.
Oil
Aic
Water
Mercury
FIGURE P1-53
Scanned with CamScanner
at a deptn o1 Y m.
A frictionless piston-cylinder device contains 100 kg
of saturated liquid refrigerant-134a. If the piston's
mass exerts a pressure of 600 kPa on the refrigerant,
the volume (liters) of refrigerant-134a in the piston is
Select one:
0.819
81.99
0.167
167
Chapter 1 Solutions
Thermodynamics: An Engineering Approach
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Using appropriate software,...Ch. 1.11 - The piston of a vertical piston-cylinder device...Ch. 1.11 - Both a gage and a manometer are attached to a gas...Ch. 1.11 - Reconsider Prob. 161. Using appropriate software,...Ch. 1.11 - A manometer containing oil ( = 850 kg/m3) is...Ch. 1.11 - A manometer is used to measure the air pressure in...Ch. 1.11 - A mercury manometer ( = 13.600 kg/m3) is connected...Ch. 1.11 - Repeat Prob. 165 for a differential mercury height...Ch. 1.11 - The pressure in a natural gas pipeline is measured...Ch. 1.11 - Repeat Prob. 167E by replacing air with oil with a...Ch. 1.11 - Blood pressure is usually measure by wrapping a...Ch. 1.11 - The maximum blood pressure in the upper arm of a...Ch. 1.11 - Consider a U-tube whose arms are open to the...Ch. 1.11 - Consider a double-fluid manometer attached to an...Ch. 1.11 - Calculate the absolute pressure. P1, of the...Ch. 1.11 - Consider the manometer in Fig. 173. If the...Ch. 1.11 - Consider the manometer in Fig. 173. If the...Ch. 1.11 - The hydraulic lift in a car repair shop has an...Ch. 1.11 - Consider the system shown in Fig. 177. If a change...Ch. 1.11 - The gage pressure of the air in the tank shown in...Ch. 1.11 - Repeat Prob. 178 for a gage pressure of 40 kPa.Ch. 1.11 - What is the value of the engineering software...Ch. 1.11 - Determine a positive real root of this equation...Ch. 1.11 - Solve this system of two equations with two...Ch. 1.11 - Solve this system of three equations with three...Ch. 1.11 - Solve this system of three equations with three...Ch. 1.11 - The reactive force developed by a jet engine to...Ch. 1.11 - The reactive force developed by a jet engine to...Ch. 1.11 - A man goes to a traditional market to buy a steak...Ch. 1.11 - What is the weight of a 1-kg substance in N, kN,...Ch. 1.11 - The pressure in a steam boiler is given to be 92...Ch. 1.11 - A hydraulic lift is to be used to lift a 1900-kg...Ch. 1.11 - The average atmosphere pressure on earth is...Ch. 1.11 - Hyperthermia of 5C (i.e., 5C rise above the normal...Ch. 1.11 - The boiling temperature of water decreases by...Ch. 1.11 - A house is losing heat at a rate of 1800 kJ/h per...Ch. 1.11 - The average body temperature of a person rises by...Ch. 1.11 - The average temperature of the atmosphere in the...Ch. 1.11 - A vertical, frictionless pistoncylinder device...Ch. 1.11 - A vertical pistoncylinder device contains a gas at...Ch. 1.11 - The force generated by a spring is given by F =...Ch. 1.11 - An air-conditioning system requires a 35-m-long...Ch. 1.11 - Balloons are often filled with helium gas because...Ch. 1.11 - Reconsider Prob. 1101. 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- Consider a double-fluid manometer attached to an air pipe shown in Fig. P1–72. If the specific gravity of one fluid is 13.55, determine the specific gravity of the other fluid forthe indicated absolute pressure of air. Take the atmospheric pressure to be 100 kPa.arrow_forward1-50 The water in a tank is pressurized by air, and the pressure is measured by a multifluid manometer as shown in Fig. P1-50. Determine the gage pressure of air in the tank if 0.2 m, h, = 0.3 m, and h, of water, oil, and mercury to be 1000 kg/m³, 850 kg/m², and 13,600 kg/m², respectively. 0.4 m. Take the densities Oil Air 1 2 h2 Water Mercury FIGURE P1-50arrow_forward1-69E The pressure in a natural gas pipeline is measured by the manometer shown in Fig. P1-69E with one of the arms open to the atmosphere where the local atmospheric pressure is 14.2 psia. Determine the absolute pressure in the pipeline. Air 2 in Natural Gas 10 in 25 in 6 in Mercury SG = 13.6 Waterarrow_forward
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