Number 3 1. Air at 0.50 m³ and 101 kPaa is compressed isothermally to 200 kPag. Find its finalvolume.0.167 m32. Find the work needed to isothermally compressed from 13 psia at 10 ft° 35 psia.-24.14 Btu3. Find the change of enthalpy needed to isothermally compressed from 100 kPa to500 kPa.4. Find the change of entropy needed to isothermally compressed 4 kg of air from 103kPa to 300 kPa.5. A piston-cylinder containing air receives heat at a constant temperature of 500 Kand an initial pressure 200 kPa. The initial volume is 0.01 m3 and the final volumeis 0.07 m3. Determine the work.-1.23 kJ/K3.89 kJ

Answered: Number 3

Engineering

Mechanical Engineering

Number 3

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.

Question

Number 3

1. Air at 0.50 m³ and 101 kPaa is compressed isothermally to 200 kPag. Find its final
volume.
0.167 m3
2. Find the work needed to isothermally compressed from 13 psia at 10 ft° 35 psia.
-24.14 Btu
3. Find the change of enthalpy needed to isothermally compressed from 100 kPa to
500 kPa.
4. Find the change of entropy needed to isothermally compressed 4 kg of air from 103
kPa to 300 kPa.
5. A piston-cylinder containing air receives heat at a constant temperature of 500 K
and an initial pressure 200 kPa. The initial volume is 0.01 m3 and the final volume
is 0.07 m3. Determine the work.
-1.23 kJ/K
3.89 kJ

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