FUND.OF THERMODYNAMICS-PRT.COMP.+CARD
10th Edition
ISBN: 9781119592914
Author: Borgnakke
Publisher: WILEY
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Chapter 1, Problem 1.28P
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PROBLEM 5: The water in a tank is pressurized by air, and the pressure is measured by a multifluid manometer as shown. Determine the gage pressure of air in the tank if h1 = 0.4 m, h2 = 0.6 m, and h3 = 0.8 m. Take the densities of water, oil, and mercury to be 1000, 850 , and 13,600 kg/m^3, respectively.
Situation 4: A mercury barometer at the base of a mountain reads 736mm at the same time, another barometer at the top of the mountain reads 590 mm. assuming air weighs 12N/cum
Determine the absolute pressure at the top of the mountain
69.437 kpa
87.663 kpa
78.715 Kpa
71.338 kpa
Determine the absolute pressure at the base of the mountain
87.663 kpa
98.194 kpa
94.164 kpa
102.465 kpa
Determine the height of the mountain
2238 ft
5324.813 ft
1084 ft
1623 ft
An airship of 100m3 in size is launched from sea level and it gradually attains height until it reaches the desired altitude. A manometer measuring the gage pressure of the inside filled Helium gas show a reading of 1.2 bar at the altitude of A meters from the ground. Manometer shows reading of 2 bar when it reaches to a height of B meters. Assume; Density of air at point A = 1.00 kg/m3 and at Point B= A = 0.80 kg/m3. You can also assume average density = 0.9 kg/m3 where required. Consider temperature inside the balloon = 10°C and negligible change in temperature during the process. (a) How much payload mass can it carry if the mass of airship itself is 5Kg? Do you expect any change in lifting capacity while moving from point A to point B? (b) Calculate the mass of helium to be expelled out to maintain the constant pressure of 2 bar at point B.
Chapter 1 Solutions
FUND.OF THERMODYNAMICS-PRT.COMP.+CARD
Ch. 1 - Separate the list P,F,V,,T,a,m,L,t, and V into...Ch. 1 - A tray of liquid water is placed in a freezer...Ch. 1 - The overall density of fibers, rock wool...Ch. 1 - Is density a unique measure of mass distribution...Ch. 1 - Water in nature exists in three different phases:...Ch. 1 - What is the approximate mass of 1 L of gasoline?...Ch. 1 - Can you carry 1m3 of liquid water?Ch. 1 - A heavy refrigerator has four height-adjustable...Ch. 1 - A swimming pool has an evenly distributed pressure...Ch. 1 - If something floats in water, what does it say...
Ch. 1 - Two divers swim at a depth of 20 m. One of them...Ch. 1 - An operating room has a positive gage pressure,...Ch. 1 - A water skier does not sink too far down in the...Ch. 1 - What is the lowest temperature in degrees Celsius?...Ch. 1 - How cold can it be on Earth and in empty space?Ch. 1 - A thermometer that indicates the temperature with...Ch. 1 - How can you illustrate the binding energy between...Ch. 1 - One kilopond (1 kp) is the weight of 1 kg in the...Ch. 1 - A stainless steel storage tank contains 5kg of...Ch. 1 - A steel cylinder of mass 4kg contains 4L of water...Ch. 1 - The Rover Explorer has a mass of 185Kg , how much...Ch. 1 - A 1700kg car moving at 80km/h is decelerated at a...Ch. 1 - The elevator in a hotel has a mass of 750kg , and...Ch. 1 - One of the people in the previous problem weighs...Ch. 1 - A 1m3 container is filled with 400kg of granite...Ch. 1 - A power plant that separates carbon dioxide from...Ch. 1 - A 5m3 container is filled with 900kg of granite...Ch. 1 - A 5000kg elephant has a cross-sectional area of...Ch. 1 - A valve in the cylinder shown in Fig. P1.29 has a...Ch. 1 - The piston cylinder in Fig. P1.29 has a diameter...Ch. 1 - A hydraulic lift has a maximum fluid pressure of...Ch. 1 - Ahydraulic cylinder has a 125mm diameter piston...Ch. 1 - A 75kg human total footprint is 0.05m2 when the...Ch. 1 - A piston/cylinder with a cross-sectional area of...Ch. 1 - A 2.5m -tall steel cylinder has a cross-sectional...Ch. 1 - An underwater buoy is anchored at the seabed with...Ch. 1 - A floating oil rig is anchored in the seabed with...Ch. 1 - At the beach, atmospheric pressure is 1025 mbar....Ch. 1 - A steel tank of cross-sectional area 3m2 and...Ch. 1 - A piston mp=5kg , is fitted in a cylinder. A=15cm2...Ch. 1 - A container ship is 240m long and 22m wide. Assume...Ch. 1 - A probe is lowered 16m into a lake. Find the...Ch. 1 - A person, 75kg , wants to fly (hoover) on a 2kg...Ch. 1 - The density of atmospheric air is about 1.15kg/m3...Ch. 1 - A barometer to measure absolute pressure shows a...Ch. 1 - A differential pressure gauge mounted on a vessel...Ch. 1 - What pressure difference a 100-m column of...Ch. 1 - A barometer measures 760mmHg at street level and...Ch. 1 - An exploration submarine should be able to descend...Ch. 1 - The absolute pressure in a tank is 115kPa and the...Ch. 1 - An absolute pressure gauge attached to a steel...Ch. 1 - A pipe flowing light oil has a manometer attached,...Ch. 1 - The difference in height between the columns of a...Ch. 1 - A piece of experimental apparatus. Fig. P1.54. is...Ch. 1 - A 0.2m3 piece of softwood is lifted upto the top...Ch. 1 - A car of mass 1775kg travels with a velocity of...Ch. 1 - What is temperature of 5C in degrees Kelvin?Ch. 1 - A mercury thermometer measures temperature by...Ch. 1 - The density of liquid water is =1008T/2(kg/m3)...Ch. 1 - Repeat Problem 1.54 if the flow inside the...Ch. 1 - Adam retains a lake 6m deep, as shown in Fig, P...Ch. 1 - In the city water tower, water is pumped up to a...Ch. 1 - The main waterline into a tall building has a...Ch. 1 - A mass of 2lbm has an acceleration of 5ft/s2 ....Ch. 1 - How much mass is in 1 gal of gasoline? In helium...Ch. 1 - Can you easily carry a 16m bar of solid gold?Ch. 1 - What is the temperature of 5F in degrees Rankine?Ch. 1 - What is the lowest possible temperature in degrees...Ch. 1 - What is the relative magnitude of degree Rankine...Ch. 1 - The Rover Explorer has a mass of 410Ibm , how much...Ch. 1 - A 2500Ibm car moving at 25mi/h is accelerated at a...Ch. 1 - An escalator brines four people with a total mass...Ch. 1 - A car of mass 4000Ibm travels with a velocity of...Ch. 1 - A power plant that separates carbon dioxide from...Ch. 1 - The piston cylinder in Fig. P1.29 has a diameter...Ch. 1 - A laboratory room keeps a vacuum of oil 1in. of...Ch. 1 - A person, 175Ibm , wants to fly (hoover) on a 4lbm...Ch. 1 - A floating oil rig is anchored in the seabed with...Ch. 1 - A container ship is 790ft long and 72ft wide....Ch. 1 - A manometer shows a pressure difference of 3.5in....Ch. 1 - What pressure difference does a 300-ft column of...Ch. 1 - A piston cylinder with a cross-sectional area of...Ch. 1 - The main waterline into a tall building has a...Ch. 1 - A piston, mp=10lbm , is fitted in a cylinder,...Ch. 1 - The human comfort zone is between 18 and 24C ....
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- One British thermal unit will raise the temperature of _____ 1b of water _____F.arrow_forwardAtmospheric pressure at sea level under standard conditions is ______inches of mercury (Hg) or_____ pounds per square inch absolute (psia).arrow_forwardAn airship of 100m3 in size is launched from sea level and it gradually attains height until it reaches the desired altitude. A manometer measuring the gage pressure of the inside filled Helium gas show a reading of 1.2 bar at the altitude of A meters from the ground. Manometer shows reading of 2 bar when it reaches to a height of B meters. Assume; Density of air at point A = 1.00 kg/m3 and at Point B= A = 0.80 kg/m3. You can also assume average density = 0.9 kg/m3 where required. Consider temperature inside the balloon = 10°C and negligible change in temperature during the process. (a) Calculate external atmospheric pressure difference between Point A and B (b) Neglecting the effect of altitude on local gravitational acceleration, determine the height attained from A to B.arrow_forward
- If a woman weighs 135 lb when standing on the surface of the earth, how much would she weigh when standing on the surface of the moon?arrow_forwardTwo pistons of a hydraulic lift have diameters of 4 m and 2 m. What is the force exerted by the larger piston when 100 N is placed on the smaller piston?arrow_forwardA vacuum gauge connected to a steam condenser shows that the pressure inside the condenser is 0.751 bar below the atmospheric pressure. If the atmospheric pressure is 1.016 bar, what is the absolute pressure of the steam inside the condenser in kPa?arrow_forward
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