12 N/cm2. A mass of 80 kg in the surroundings is also lifted through a distance of 6 metres. (i) Find the change in energy of the system. ii) The system is returned to its initial volume by the change in energy of system. Eii) Determine the total change in energy of the system. an adiabatic process which requires 100 kJ of work. Find [Ans. (i) 22.54 kJ, (ii) 100 kJ, (iii) 122.54 kJ]

Elements Of Electromagnetics
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10. A system receives 42 kJ of heat while expanding with volume change of 0.123 m3 against an atmosphere of
12 N/cm2. A mass of 80 kg in the surroundings is also lifted through a distance of 6 metres.
(i) Find the change in energy of the system.
(ii) The system is returned to its initial volume by an adiabatic process which requires 100 kJ of work. Find
the change in energy of system.
(iii) Determine the total change in energy of the system.
[Ans. (i) 22.54 kJ, (ii) 100 kJ, (iii) 122.54 kJ]
Transcribed Image Text:10. A system receives 42 kJ of heat while expanding with volume change of 0.123 m3 against an atmosphere of 12 N/cm2. A mass of 80 kg in the surroundings is also lifted through a distance of 6 metres. (i) Find the change in energy of the system. (ii) The system is returned to its initial volume by an adiabatic process which requires 100 kJ of work. Find the change in energy of system. (iii) Determine the total change in energy of the system. [Ans. (i) 22.54 kJ, (ii) 100 kJ, (iii) 122.54 kJ]
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