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Thermodynamics Unit Internal Energy, Work and Heat 1. The internal energy of a system increased by 982 J when it absorbed 492 J of heat. Was work done by or on the system? How much work was done? What is ΔV if pressure is constant at 1 atm? €
- Internal Energy, Work and Heat Wkst - University of Texas at Austin
Internal Energy, Work and Heat. 1. The internal energy of a...
- Internal Energy, Work and Heat Wkst - University of Texas at Austin
3.4 First law of thermodynamics – internal energy The first law of thermodynamics expresses that energy is conserved, when all forms of energy, including heat, are taken into account.
Thermodynamics is the branch of physics that deals with systems in which energy is in the form of heat, work, and internal energy. Such systems have a wide variety of practical applications, ranging from gasoline-fueled car engines to refrigerators and air conditioners.
The internal energy of a system is the sum of kinetic energies of all of its constituent particles, plus the sum of all the potential energies of interaction among these particles.
Internal Energy, Work and Heat. 1. The internal energy of a system increased by 982 J when it absorbed 492 J of heat. Was work done by or on the system? How much work was done? What is ΔV if pressure is constant at 1 atm? 2. A gas in a cylinder was placed in a heater and gained 5500 kJ of heat.
Heat, Temperature, and Thermal Energy • Thermal energy Eth is an energy of the system due to the motion of its atoms and molecules. Any system has a thermal energy even if it is isolated and not interacting with its environment. The units of Eth are Joules. • Heat Q is energy transferred between the system and
Chapter 2: Internal Energy (U), Work (w), Heat (q), Enthalpy (H) Internal Energy (excludes motion and rotation of vessel) o Look at isolated part of universe U U U system Environment Total = isolated First law of thermodynamics: - Total U for isolated system is constant - Energy can be exchanged between various components
