First Law of Thermodynamics

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First Law of Thermodynamics
Lecture By: Er. Himanshu Vasishta, Tutorials Point India Private Limited
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TutorialsPoint_
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heat and work are not energy are the ways to transfer energy

jagadeesh_miriyala_
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thanks master. help me with the solution of: 2. A mass of gas occupying 0.08m3 at 6kN/m2 and 800C is expanded reversibly in a nonflow process according to the equation, 𝑃𝑉 . = 𝑐𝑜𝑛𝑠𝑡𝑎𝑛𝑡. The pressure at the end of the expansion is 0.7kN/m2. The gas is then heated at constant pressure back to the original
temperature, taking Cp and Cv as 1.005 and 0.74 kJ/kgK respectively; determine
(i) the work transfer in the expansion process
(ii) The heat transfer in the expansion process (iii)The volume at the end of the heating process
(iv) The change in internal energy during the heating process.

jamesedima
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Is the work done by the system and work done on the system always the same?? Shouldn't the law be Work done on the system(w1) + heat given to the system (q) = work done by the system(w2) + change in internal energy of the system(deltaU). W1 + q= Delta U + w2. If w1=-w2 always then what about in the case of isothermal free expansion or whatever free expansion

abhaaggarwal
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Sir what is the difference between process and cycle

dilips
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Sir please give me first low of thermodynamics fromula

rabinakalita