Sustainable Energy, Si Edition
2nd Edition
ISBN: 9781337551670
Author: DUNLAP, Richard A.
Publisher: Cengage Learning
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Chapter 5, Problem 12P
To determine
Find the energy released during the
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Problem 1: The figure shows a gas contained in a vertical piston- cylinder assembly. A vertical
shaft whose cross-sectional area is 0.8 cm² is attached to the top of the piston. The total mass of
the piston and shaft is 25 kg. While the gas is slowly heated, the internal energy of the gas
increases by 0.1 kJ, the potential energy of the piston-shaft combination increases by 0.2 kJ, and
a force of 1334 N is exerted on the shaft as shown in the figure. The piston and cylinder are poor
conductors, and friction between them is negligible. The local atmospheric pressure is 1 bar and
g=9.81 m/s². Determine, (a) the work done by the shaft, (b) the work done in displacing the
atmosphere, and (c) the heat transfer to the gas, all in kJ.
F = 1334 N
-A=0.8 cm²
Patm = 1 bar
Gas
-D = 10 cm
Two similar round bars A and B are each 30 cm
long as shown in the given figure. The ratio of the
UB
energies stored by the bars A and B,
is
UA
12 cm-
|2 cm-
EL4 cm
4cm
A
20 cm 10 cm|
10 cm
20 cm
Chapter 5 Solutions
Sustainable Energy, Si Edition
Ch. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - A sample of 137Cs (half-life = 30.1 years) decays...Ch. 5 - Prob. 4PCh. 5 - What are the decay products of the decay of the...Ch. 5 - Prob. 6PCh. 5 - Nuclide A has a half-life of 4 days, and nuclide B...Ch. 5 - 64Cu can decay by both decay and + decay. Draw an...Ch. 5 - At time t = 0 a sample contains 3.57 108 nuclei...Ch. 5 - Prob. 10P
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