The figure below shows a piston-cylinder assembly fitted with a spring of stiffness k = 29.7 N/m whose relaxed state occurs when the piston touches the left wall of the cylinder. The cylinder contains air and the spring is in a vacuum. The piston face, which has an area of 178 cm², is 99 cm from the left wall after being initially pressurized with air. During a hold, in which no additional air enters the assembly, a force f = 7.7 N is required as shown. After the hold, the piston is observed to move 22 cm to the right. Friction between the piston and cylinder is negligible. Cross-sectional Area, A P, T X air vacuum If 10.7 J of heat is transfered to the air, determine the change in the air's internal energy, AU, in J. U = number (rtol=0.05, atol=1e-06) f

The figure below shows a piston-cylinder assembly fitted with a spring of stiffness k = 29.7 N/m whose relaxed state occurs when the piston touches the left wall of the cylinder. The cylinder contains air and the spring is in a vacuum. The piston face, which has an area of 178 cm², is 99 cm from the left wall after being initially pressurized with air. During a hold, in which no additional air enters the assembly, a force f = 7.7 N is required as shown. After the hold, the piston is observed to move 22 cm to the right. Friction between the piston and cylinder is negligible. Cross-sectional Area, A P, T X air vacuum If 10.7 J of heat is transfered to the air, determine the change in the air's internal energy, AU, in J. U = number (rtol=0.05, atol=1e-06) f

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

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

Parvinbhai

The figure below shows a piston-cylinder assembly fitted with a spring of stiffness k = 29.7 N/m whose
relaxed state occurs when the piston touches the left wall of the cylinder. The cylinder contains air and the
spring is in a vacuum. The piston face, which has an area of 178 cm², is 99 cm from the left wall after being
initially pressurized with air. During a hold, in which no additional air enters the assembly, a force f = 7.7 N is
required as shown. After the hold, the piston is observed to move 22 cm to the right. Friction between the
piston and cylinder is negligible.
Cross-sectional Area, A
p, T
X
air
vacuum
If 10.7 J of heat is transfered to the air, determine the change in the air's internal energy, AU, in J.
U = number (rtol=0.05, atol=1e-06)
?
f

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