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discuss the similarities and especially the distinctions between heat work and internal energy

discuss the similarities and especially the distinctions between heat work and internal energy

Grade:12th pass

1 Answers

Arun
25757 Points
5 years ago
Both heat and work have some similarities in the way they behave that you will have to consider. First both heat and work are directional quantities. This means that both of them have a certain magnitude and direction in relation to whether the energy is entering or leaving the system
Second, both heat and work are only recognized when energy crosses the systems boundaries. Third, building upon the second statement, systems only contain energy not work or heat. Fourth, both heat and work are associated with a process as the system follows a path from one state towards another state
 
Difference
Internal energy is the energy stored in a body. It increases when the temperature of the body rises, or when the body changes from solid to liquid or from liquid to gas. Internal energy is the sum of kinetic and potential energy of all particles in the body.  Unit of internal energy: joule (J)

Heat is the energy transferred from one body to another as a result of a temperature difference.  When two bodies of different temperatures touch each other, energy is transferred from the hot body to the cold body. Typically the two bodies reach the same temperature. The bodies are then said to be in thermal equilibrium.

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