Explanation Given Information: Diameter of the balloon = 6 ft Weight of the balloon = 3.5 lbf = 15.5 N Pressure in the balloon = 18 lbf/in 2 = 124106 N/m 2 Temperature = 60 0 F = 288.7 K D e n s i t y o f H y d r o g e n = P R T P = 124106 P a R = 8 . 3 1 4 / 2 = 4 . 1 5 7 k J / k m o l e K F o r N e u t r a l l y B u o y a n t : B u o y a n c y f o r c e = W e i g h t o f t h e b a l l o o n B u o y a n t f o r c e = V o l u m e o f b a l l o o n × d e n s i t y o f a i r × g Calculation: V o l u m e o f t h e b a l l o o n = 4 π 24 ( D 3 ) = π 6 ( 6 3 ) =113

8th Edition

ISBN: 9789385965494

Author: Frank White

Publisher: MCGRAW-HILL HIGHER EDUCATION

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Chapter 2, Problem 2.124P

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The altitude at which the balloon is in neutrally buoyant in the U.S standard atmosphere.

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Chapter 2, Problem 2.123P

Chapter 2, Problem 2.125P

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Chapter 2 Solutions

Fluid Mechanics, 8 Ed

Ch. 2 - Prob. 2.1P Ch. 2 - For the two-dimensional stress field shown in Fig....Ch. 2 - A vertical, clean, glass piezometer tube has an...Ch. 2 - P2.4 Pressure gages, such as the bourdon gage in...Ch. 2 - Quito, Ecuador, has an average altitude of 9350...Ch. 2 - Prob. 2.6P Ch. 2 - La Paz, Bolivia, is at an altitude of...Ch. 2 - P2.8 Suppose, which is possible, that there is a...Ch. 2 - A storage tank, 26 ft in diameter and 36 ft high,...Ch. 2 - P2.10 A large open tank is open to sea-level...

Ch. 2 - Prob. 2.11P Ch. 2 - Prob. 2.12P Ch. 2 - Prob. 2.13P Ch. 2 - Prob. 2.14P Ch. 2 - Prob. 2.15P Ch. 2 - Prob. 2.16P Ch. 2 - Prob. 2.17P Ch. 2 - The system in Fig. P2.18 is at 20°C. If...Ch. 2 - Prob. 2.19P Ch. 2 - The hydraulic jack in Fig. P2.20 is filled with...Ch. 2 - At 20°C gage A reads 350 kPa absolute. What is the...Ch. 2 - The fuel gage for a gasoline tank in a car reads...Ch. 2 - Prob. 2.23P Ch. 2 - Prob. 2.24P Ch. 2 - Prob. 2.25P Ch. 2 - Prob. 2.26P Ch. 2 - P2.27 Conduct an experiment to illustrate...Ch. 2 - Prob. 2.28P Ch. 2 - Prob. 2.29P Ch. 2 - Prob. 2.30P Ch. 2 - In Fig. P2.31 all fluids arc at 20°C. 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