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Thermodynamics by Prasanna Kumar

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Chapter 4

The First Law of Thermodynamics

LEARNING OBJECTIVES
  • To explain Joule’s experiments and its significance in defining the first law
  • To prove that energy is a property
  • To state and explain the components of energy
  • To Give different statements of the first law
  • To make a first law analysis of processes of a closed system
  • To define the properties enthalpy, and specific heat
  • To explain the molecular basis of energy

4.1 Introduction

We can define energy as the quantity of action by a force. There are only two forms of energy viz., kinetic energy and potential energy. They are themselves governed by the principle that for any mechanical system, the sum of kinetic and potential energies is a constant. The above statement is in effect the ...

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