Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 13, Problem 38P
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pipe
6-77 Water is flowing into and discharging from
U-section as shown in Fig. P6-77. At flange (1), the total
absolute pressure is 200 kPa, and 55 kg/s flows into the
pipe. At flange (2), the total pressure is 150 kPa. At loca-
tion (3), 15 kg/s of water discharges to the atmosphere, which
is at 100 kPa. Determine the total x- and z-forces at the two
flanges connecting the pipe. Discuss the significance of grav-
ity force for this problem. Take the momentum-flux correc-
tion factor to be 1.03 throughout the pipes.
m as
15 kg/s
(3
3 cm
40 kg/s
10 cm
ZA
55 kg/s cm
FIGURE P6-77
Water ilows smoothly in a hor-
Tigure 4 ZU Quesuon o.
izontal pipe. Figure 14-27 shows
the kinetic energy K of a water el- K
ement as it moves along an x axis
that runs along the pipe. Rank the
three lettered sections of the pipe
according to the pipe radius, great-
est first.
Figure 14-27 Question 9.
A certain fluid at 10 bar is contained in a cylinder behind a piston, the initial volume being 0.05 m3. Calculate the work done by the fluid when it expands reversibly,
(a) At constant pressure to final volume of 0.2 m3 ;
(b) According to linear law to final volume of 0.2 m3 and a final pressure of 2 bar
(c) According to a law pV= constant to a final volume of 0.1 m3 ;
(d) According to law pV3 = constant to a final volume of 0.06 m3. Sketch
all processes on p-V diagram.
Chapter 13 Solutions
Physics for Scientists and Engineers
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