Determine the change in energy in the system in the following three processes: a. The system absorbs 400 cal of heat, and at the same time do 400 J of work; b. The system absorbs 420 cal of heat, and at the same time work 420 J was done to him; c. 1200 cal of heat is removed from a gas at constant V

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First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.